are arrested) <> There is a
conspiracy of silence
about what
is happening (= everyone has agreed not to discuss it).对于发生的事情，大家一致保持缄默。4 [U] a situation in
which people do not communicate with each other by letter or telephone 互相不通音信的情形；
无书信（或电话）联系：rhe phone caH came months
of silence.几个月没有音信之后，打来了一个电
话。.silence is 'golden {saying) it is often best not to
say anything 沉默是金一more at heavy <?办，pregnant
■
verb [VN] 1 to make sb/sth stop
speaking or making a noise 使安静；使不说话：She fenced him with a gtore. 她瞪了他一眼，他就示在声了。◊ Our bombs siZenced the
enemy’s guns (= they destroyed them).我们的轰炸把 敌人的炮火打哑了。2 to make sb stop expressing
opinions that are opposed to yours 压制，使术再发表
(反对意见）：AH protest had been sfZe/iced•—切反知
的声音都被压了下去。◊ Her recent
achievements have synced her critics.她近来取得的成果让那些批评她的人
无话可说了。
■
ejcctomaf/’on (/o/777fl/) used to tell
people to be quiet (用
以让人们安静）安静，静下来：Sfience in court/在法庭 内要保持肃静！
si-len-cer /'sail8nsa(r)/ noun 1 (8r£) [NAmE muf-fler)
a
device that is fixed to the exhaust of a vehicle in order to
reduce the amount of noise that the engine makes (发动机的）消音器一picture_:o motorcycle 2 a device that is fixed
to the end of a gun in order to reduce the amount of noise that it makes when
it is fired (枪支的）消音器
si-lent CHw /'sailant/ adj.
1 (of a person 人)not speaking 不说话的；沉默的：to remafn^stay/fceep sitent 保持沉默◊ TTiey huddZed
together in si7ent groups.他丨门一群_地围在一起，默不作
声。◊ As the curtain rose, the
audfence/eZZ silent•幕启
_时，观众安静下来。◊ He gave me the
sftent treatment (=did not speak to me because he was angry).他对我 ■不予理睬。2 [only before noun] (especially of a man 充指 男人)not talking very much很少说话的；不爱说话的；
少言寡语的 PHTl
quiet： ffe’s the strong
silent (ype.他 是那_强_而沉默寡言的人。3 where there is little or
no sound; making little or no sound 无声的；安静的；
不喧闹的 ‘ BHU Quiet : At
[ast the sftent.车
_ 的喧龠终于消逝了。◊ rhe streets were sfZent and deserted.大街小巷寂无一人。4 [only before noun] not
expressed with words or sound不用言语表达的；无声
的：a sflent prayer/protest 默祷；左声的抗 t ◊ 77iey nodded msf【ent
agreement.他们默默地点头表示同意。
5 〜（on/about sth) not giving information
about sth; refusing to speak about sth不提供情况的；未谈及的；
拒绝讲的：The report is strcmgdy
si7ent on this issue.很
奇怪，报告对这个问题避而不谈。◊ the right to remain silent (= the legal right not
to say anything when you are arrested)沉默权 6 [only before noun] (of
old films/ movies 过去的电影）with pictures but no
sound 无声
的；无声电影如：a silent知阳/爪〇vie无声电影◊ stars the silent
screen 无声电影时代的明星 7 (of a letter in a word 单词中的字母）written but not pronounced 不发 音的：TTie 力’ in
lamb’ is siZent. * lamb 中的 b 不发音。
si.lent.ly /如11911111/ dv//1 without speaking 默默地； 不说话地：They marched siZenriy through the streets.
无声地穿过街道。2 without making any or
much sound 悄悄地；静静地 H7i?l
quietly ： She
crept siZentZy
out 〇/ the room.她悄悄溜出房间。3 without using words or sounds to express sth 无声地；默默地；
不用言语表达地：She prayed siientfy.她默默地祷告。◊ He siienriy
agreed with much 〇/what
she had safd•对于
她所讲的，有很多他暗自赞同。Msit/stand,silently _ by
to
do or say nothing to help sb or deal with a difficult situation 袖手旁观； 坐视
the .silent ma jority noun [usually sing.] the
large number of people in a country who think the same as each other, but do
not express their views publicly 沉
默的大多数（不公开表达自己意见的广大民众>
.silent 'partner noun {
the .silent 'way noun [sing.] a
method of teaching a foreign language in which the teacher does not speak much,
but uses movement, pictures and wooden rods
867 silk moth
to explain meaning默示教学法'(教师少讲，借助于动
作、图画和木棒教授外语）
sil-hou-ette
/.sdu'et/ noun, verb
m noun 1 [C, U] the dark
outline or shape of a person or an object that you see against a light
background (浅 色背；衬托出品）暗色轮廓：the siZftouette 〇/chimneys and towers 烟囱和塔楼的轮廓◊ 77ie mountains
stood out in siWiouette.群山的轮雇衬無了出来。2 [C] the shape of a person's body or of an object (乂的:）知形；（事物
的）形状：The dress is 月tted to give you a
jfZattering Whoiiette.穿这件连衣裙，你显得更有身段了。3[C]a
picture
that shows sb/sth as a black shape against a light background, especially one
that shows the side view of a person’s face剪影；（尤指人脸的）侧影
■
verfc
[VN] [usually passive]〜sb/sth (against sth) to make sth appear as a silhouette 使呈现暗色轮廓：A/igure stood fn the
doorway, siZhouetted against the 门，口
_站_着一个人，屋里的亮光映衬出他的轮廓。
sil-ica /'silika/ noun [U] [symb SiOz) a chemical containing silicon found in
sand and in rocks such as quartz, used in making glass and
cement 二氧化硅 'silica gel noun [U] a substance made
from silica in the form of grains, which keeps things dry by absorbing water硅胶（颗粒状千燥剂）
sili.cate
/她!^/ nown [C，U] 1 (d?em/st/y 化）any compound containing silicon and oxygen 硅酸盐： duminium sfZicate 桂酸锡 2 a mineral that
contains silica. There are many different silicates and they form a large part
of the earth’s crust•硅酸盐矿物 silicon /'siliken/ noun [U] {symb Si) a chemical element.
Silicon exists as a grey solid or as a brown powder and is found in rocks and
sand. It is used in making glass and transistors.硅
.silicon
'chip noun a
very small piece of silicon used to carry a complicated electronic circuit 桂片 sili-cone /'silikaun; NAmE -koun/ noun [U] a chemical
containing silicon. There are several different types of silicone, used to make
paint, artificial rubber, varnish, etc.硅酮；聚硅氧烷：a srticone breast fmptoit硅酮隆 胸植入物
.Silicon
'Valley noun [U]
the area in California where there are many companies connected with the computer
and electronics industries, sometimes
used to refer to any area where there are a lot of computer companies硅谷(美国加利福尼亚州一处计算机和电子公
司聚集地，有时用以指任何计算机公司聚集地）
sili.cosis
/.sili’kaosis;
/SWwf -_koo-/ r»ow/7 [U] (wed/co/ 医）a serious lung disease caused by breathing in dust
containing silica硅肺，硅沉着病，硅肺病（长期吸入
_ 二氧化硅造成的肺部疾病）
silk
〇*« /silk/ noun
■
[U] fine soft thread produced by silkworms (蚕）丝
■
[U] a type of
fine smooth cloth made from silk thread 丝织物；丝绸：a sfWc b/ouse女式丝绸衬衫◊ WWc stocfci叩s长筒丝袜◊ made o/pure sfWc纯丝做的◊ Her sfci’n was
as smooth as sfWc.毹的皮肤像丝绸一样光滑。
_ see also watered silk 3 [U] silk thread used
for sewing (用于缝纫的）丝线 4 silks [pi.] clothes made of
silk, especially the coloured shirts worn by people riding horses in a race (= jockeys)丝绸衣服（尤指骑师
在赛马时穿的彩色赛马衫）5[(；](8/£，/<^律）3 17?6(^
lawyer
who represents the government (= a King’s/ Queen’s counsel)王室律师；王室法律顾问：to
take
=to
become this type of lawyer)担任王室律师 make
a silk ,purse out of a sow’s ’ear to succeed in
making sth good out of material that does not seem very good at all用劣材制精品；化腐朽为神奇
silk-en /'silken/ adj. (literary) 1 [usually before noun] soft, smooth and shiny like silk丝绸一样的；柔软光清的：
sfWcen hair 柔软光滑的头发 2 [usually before noun] smooth and gentle 柔_的‘；的；轻柔的：her srtfcen voice 她那柔和的嗓音3 [only
before noun] made of silk丝制
的；丝威“；丝绸的：•siZfcenribbons丝带 silkie /'silki/ noun = selkie
'silk
moth noun a moth
whose larva produces silk 蚕蛾