-
A
new
design
method
is
presented,
with
emphasis
on
the
guidelines
of
thought
for
its
derivation.
It
has
many
advantages
over
those
available/the
existing
ones.
Finally,
the
application
of
this
method
is
illustrated
with
an
example.
本文提出了
一种新的设计方法，
重点放在其推导思路上，
它与以
往的方法相比有不少优点。
最后
举例说明了该方法
的应用。
Astronauts
performing
tasks
abroad
space
shuttle
get
help
from robot arm.
宇航员在航天飞
机外面执行任务时可借助于机
械手
A
safety
valve
is
provided
in
order to allow excess pressure to
escape.
设置有安全阀，以使得
能够降低过高的压力。
All
bodies
consist
of
molecules
and molecules of
atoms.
一切物
体都由分子组成，
而分子则由原
子组成。
All
these forces the fuze must be
able
to
withstand
without
changing
its
operating
characteristics.
引信必须能承受
所有这些力，
且其作用性能不得
有所改变。
Also shown on this page
is / On
this
page
is
also
shown
a
block
diagram
of a color TV set.
在这一页上还画出了彩色电视
机的方框图。
Albright
played
hardball
by
walking out of the
meeting.
奥尔布莱特以退出会场的方式
表示强硬的立
场
Arabs
and
Jews
alike
are
increasingly
at
risk
in
a
climate
of steadily rising
tensions.
在紧张局势不断加剧这样一种
(
政治
)
气候中，
无论是
阿拉伯人
还是犹太人都在冒越来越大的
风险
Although
New
Zealand
was
the
first
country
in
the
world
where
women
got
the
vote
in
1893,
it
remains a sexist society
in which
male
chauvinism
of
the
pioneering
period still rules many
social patterns
尽管新西兰早在
1893
年就成为
世界上第一个妇女获得选举权
的国家，
但它
至今依然存在性别
歧视，
殖民开垦初期的大男子主
义还笼罩着社会的许多方面。
As
a
moderate
there
is
a
choice
between
normal
water,
heavy
water,
and
graphi
te.
可以选择普
通的水，重水和石墨作为减速
剂。
Another two weeks saw
up-to-the
standard
machine
parts
being
turned out.
又过了半个月，
合乎标准的各种
机器部件就生产出来了
At the meeting he made a
speech
—
eloquent and
energetic.
他在会上发表了讲话—非常动
听有力
An
idea
suddenly
struck
to
me.
我突然想到了一个主意。
Alarm
began
to
take
entire
possession
of
him.
他开始变得
惊恐万状。
A body at rest will not move till a
force is exerted on it.
若无外力
的作用，
静止的物体就
不会移动。
As
the
moon
’
s
gravity
is
only
about
1/6
of
the
gravity
of
the
earth,
a
200-pound
man
weighs
only 33 pounds on the
moon.
由
于月球的引力只有地球引力的
< br>1/6
，所以一个体重
200
磅
的人
在月球上仅重
33
磅。
Any
body
above
the
earth
will
fall
unless
it
is
supported
by
an
upward
force equal to its weight.
地球上的任何物体都会落下
来，
除非它受到一个大小与其重量
相等的力的支撑。
A
rocket
must
attain
a
speed
of
about
five
miles
per
second
so
that it
may put a satellite in orbit.
火箭必须获得每秒约
5
英里的
速度，以便把卫星送入轨道。
/
为了能把卫星送入轨道，
火箭必
须获得每秒约
5
英里的速度。
After
dinner,
the
four
key
negotiators
resumed
their
talks,
which
continued
well
into
the
night.
饭后，四个主要谈判
人
物继续进行会谈，一直谈到深
夜。
Ambition
is
the
mother
of
destruction as well as of evil.
野心不仅是罪恶的根源，
也是毁
灭的根源。
Although
insomnia
is
usually
blamed
on anxiety or depression,
a new study
reveals that physical
ailments
may
also
contribute.
Researchers
studied
3445
adults
with a chronic
medical condition
or
depression
and
found
the
conditions
most
associated
with
severe
insomnia
were,
in
order
depression,
hip
problems,
congestive
heart
failure,
peptic
ulcers,
lung
disease
and
back
problems.
At
the
same
time,
our
lives
are
dominated
by
the
24-hour
night
and
day
cycle.
If
the
24-hour
rhythm
is
interrupted,
many
people
feel
tired
or
uncomfortable,
thus
resulting
in
insomnia.
And
some
people
will
be ill after weeks of insomnia.
失眠一般被归咎于焦虑和压力，
而一项新研究表明身体染病也
< br>有可能导致失眠。研究者们对
3445
例患有慢性病或者
处于压
力中的成年人研究后发现，
与严
重失眠密切相关的因素依次为：
压力、
髋部疾病、
充血性心脏病、
消化系统溃疡、
肺病以及背部疾
病。
同时，我们的生活受
24
小时日
夜周期支配。如果
24
小时节律
被扰乱，
很多人都会感觉
疲倦或
者不舒服，
从而引起失眠。
也有
些人会在连续几周失眠后生病。
B
e
careful
not
to
mix
the
liquids.
注意不得把这几种
液体混合起来。
By
electromotive
force
is
meant
the potential difference across the
battery
when
there
is
no
flow
of
current.
所谓电动势指的是当没有电流
流动时电池两端的电位差。
But the current emphasis on
corn
to
produce
ethanol
in
the
Midwestern
Corn
Belt,
for
instance,
is
promoting
monoculture and
will likely make
no-till
farming
more
difficult
in
this
region.
然而以中西部的玉米
产区带为例，
为了生产乙醇，
人
们当前只注重玉米的种植，
这种
做
法
实
际
上
是
在
鼓
励
单
一
< br>栽
培，
??而且也可能使在该地区
实施免耕法更加困难。
By
many
such
experiments
Galileo
showed
that,
apart
from
differences
caused
by
air
resistance,
all
body
fall
to
the
ground
at
the
same
speed.
Whatever their weight is.
伽<
/p>
利
略
经
过
多
次
这
类
实
验
证
明
,
一
切
物
< br>体
,
不
论
其
重
量
如
何
,
除了因空气阻力引起的差别
外
,
都是以同样的速度落向地面
的。
Between these two tiny particles,
the proton and the electron, there
is
a
powerful
attraction
that
is
always
present
between
negative
and positive electric charges.
< br>在质子和电子这两个微粒之间
有一个很大的吸引力，
这个
吸引
力总是存在于正、负电荷之间。
But logic
alone
does
not
make a
first-class mind.
然而仅凭逻辑还不能成
为第一
流的头脑。
C
ement,
wood
and
steel
are
the
most
widely
used
building materials.
水泥、
木材和
钢材是最广泛使用的建筑材料。
Copper, which
is
used so widely
for
carrying
electricity,
offers
very little resistance.
铜的电阻
很小，
所以广泛地用来
传输电力。
Cost
aside,
greater
reliance
on
agrichemicals
may
adversely
affect
nontarget
species
or
contaminate
air,
water
and
soil. <
/p>
除了成本问题以外，
更多地以来
农用化学
品还会对目标以外的
物种造成负面影响，或污染空
气、水和土壤
。
Cell
’
s
“
Quality
Control
”
Mechanism Discovered
细胞的
“质量监控”
机制被发现。
China
was
the
first
country
to
invent
rockets.
中国是第一个发
明火箭的国家
.
octors
said
that
they
were
not sure whether they could
save her life.
D
医生们说他们不敢肯定是否救
得了她的命。
H
He
said
that
the
release
of
the
men
gave
the
green
light
to
terrorism.
他说，
释放这
些人，
等于向恐怖
主义活动开绿灯。
His
superior
grades
at
high
school
enabled
him
to
enroll
at
the
tuition-
free
College
of
the
City of New York.
由于在中学成绩优异，
他进入了
免收学费的纽约市立
大学。
His view of the press
was that the
reporters
were
either
for
him
or
against him.
他
对新闻界的看法是，
记者们不
是支持他，就是反对他。
He
expressed
the
hope
that
he
would
come
over
to
visit
China
again.
他表示希望
能再来中国访
问
He has
learned French, which he
thinks
is
the
most
beautiful
language in the
world.
他学过法语，
他认为法语是世界
上最美的语言。
He
liked
his
sister,
who
was
warm
and
pleasant.
but
he
did
not
like
his
brother,
who
was
aloof and
arrogant.
他喜欢热情洋溢的妹妹
，而不
喜欢冷漠高傲的哥哥。
I
n
recent
years
local
newspapers
have
been
sprinkled
with
passionate
letters
advising
various
suggestions
on
the urban construction of Beijing.
近年来热情的读者纷纷致函各
地方报纸，
对北京
的城市建设提
出了种种建议。
In
no
case
will
the
neighbors
look on with folded arms.
邻居们决不会袖手旁观。
In
medical research a relation has
been
found between measles and
such things
as behavior problems,
personality
changes,
and
dulling
of
mental
ability.
医学研究已经
发现
，
麻疹与举止反常、
性格变
态和智力低
下等有关。
If an electron moves,
it produces
a
magnetic
field.
如果电子运动
的话，它就会产生磁场。
If the dam had broken, we would
(should)
have
been
killed.
如果
[
那时
]
大坝决口
的话，
我们早就
死了。
If
there
were
no
gravity,
there
would be
no air
round
the
earth.
倘若没有重力，
地球周围就不会
有空气
。
If
she
were
to
do
this
test,
she
might
do
it
in
some
other
way.
要是她来做这项实验，
她可
能用
另外一种方法去做。
If
a
pound
of
sand
were
broken
up and turned into atomic energy,
there
would by enough power
to
supply the whole of
Europe for a
few
years.
如果使一磅沙子分
裂并转变成原子能，
那么这种
能
量将足以供整个欧洲使用好几
年。
If
necessary,
check
that
the
circuit
diagrams
and
instruction
for
opeartion
are
still
applicable.
必要时，
应核对线路图和使用说
明书是否仍然适用
In
this
case
not
only
do
the
resistors
absorb
power,
but
also
does the voltage
source.
在这种情况下
,
不仅
那些电阻
(resistor)
吸收
(
absorb)
功率
,
而且
电压源
(voltage
source)
也吸收
功率。
It
was
Faraday
who/that
discovered
the
phenomenon
of
electromagnetic induction.
正是法拉第发现了电磁感应现
象。
It is this
impedance
（阻抗）
with
which
we
are
concerned./
It
is
this
impedance which/that we are
concerned
with.
我们所关心的正是这个阻抗。
It
is
quite
essential
that
digital
designers
(should)
have
a
good
knowledge
of
Boolean
algebra
（布尔代数）
.
数字
(digital)
设计人员
(designer)
很好地了解布尔代数
(B
oolean
algebra)
是十分必要的。
It
is
suggested
that
drugs
be
made in space.
有
人
建
议
在
太
空
制
造
药
物
(drug).
Its
condition is that (x
–
a) be a
root.
其条件
是
(x-a)
为一个根
(root)<
/p>
。
It
takes
time
before
ozone-depleting
chemicals
can
be
totally
eliminated.
< br>要彻底清
除消耗臭氧的化学品还需要时
间
.