de-sal-in-ation /Idi:,ssBli,neiJn/
noun [u] the
process of removing salt from sea water (海水的）脱盐：a desal- inarion pkmt脱盐工厂
de-scale /.dii'skeil/ verb
[VN] (fir£) to remove the scale (=the
hard white material left on pipes, etc. by water when it is heated) from sth除去（热水管道等）的水垢
des-cant /'desksent/ noun
(music #) a tune that is sung or played at the same time as, and usually
higher than, the main tune高于主音的旋律
.descant re'corder (6r£) (NAmE so,prano re'corder) noun {music #) the most common
size of recorder (=a musical
instrument in the shape of a pipe that you blow into)，with a high range of
notes 迪斯坎特竖笛
des-cend /di'send/ verb
1 (formal) to come or go down from a higher to a lower level 下來;..下去；下降：[V] TTie pkme began to
descend 飞机开 & 降落。o TTre results,
ranked in descending order (= from the highest to
the lowest) are as follows ：结果按递减顺序排列如
下。◊ [VN] descended the stairs sZowZy•她缓慢地走卞
_梯。f*nn ascend 2 [V] (fornia/) (of a
hill, etc.山等）to slope downwards 下■斜；下倾：At this point the path descends steepiy 小路众这.異&然而下.。033 ascend 3 [V]〜（on/upon sb/sth) (//ferary) (of night，, darkness, a mood, etc.夜晚、黑暗、情绪命）to arrive and begin to affect sb/sth 降临.；来临 mm fall ： Night descends quickly in the tropics.热带地区黑夜来得快。◊ Cdm Jesce/ided on (he
crowd/人群平■静卞—来。be des'cended from sb to
be related to sb who lived a long time ago 是某人的后裔He claims to be
descended 介om a Spcmis/iprince.也声称是一位西班牙王子的后裔。
des'cend into sth [no passive] (formal) to gradually
get into a bad state 逐渐陷入：The country was
descending mto chaos.这个国家陷入一片混乱。des'cend on/upon sb/sth to visit sb/sdi in large numbers,
sometimes unexpectedly 突然大批来访：Hundreds of football fans descenckd on the ciiy•数百名足球迷蜂拥入;des’cend to sth [no passive] to do sth that makes people
stop respecting you降j氐身份去做；竟做出;堕落到…地步： They descended to the level of personal
insults.
鄙到进行人身侮辱的地步。
des-cend-ant /di'sendant/ noun
1 a person's descendants are
their children, their children^ children, and all the people who live after
them who are related to them 后裔；后代；_子孙：He was cm O’Conor and
a direct descendant 〇/ the 丨ast High King
o/JreZand•他属于奧康 纳家族，是爱尔兰最后一位舍王的嫡系后裔。◊ Many 〇/ them are descendants 〇/ the
originaZ settZers.他们牟 多人都是早期移民的后裔。2 something that has
developed from sth similar in the past (由过去类似物 发展来的）派丰物
des-cent /di'sent/ noun
1 [C, usually sing.] an action of coming or going down 下降；下倾：The plane began its descent to Heathrow.飞til _始尚希思罗机场降落。◊ (/}!gwraf/Ve) the coimtry’s sw(/it
descent into anarc/iy 国家 迅速陷入无政府状态EBQ ascent 2 [C] a slope going downwards 斜坡；坡道："There is a gradyd descent to the sea.有一片斜坡缓缓伸延到海边。EH3 ascent 3 [U]〜(from sb) a person’s family
origins 血统；祖籍； 祖先；虫身 Esia
ancestry: to be of Scottish descent 祖籍是苏奋兰◊ He traces his
Hne 〇/ descent 户*om the. Stuart
fcings.他的家族可追溯到斯图亚特王朝。
de-SCribe /di'skraib/ verb 1
~ sb/sth (to/for sb) I ~ sb/sth (as sth) to say what sb/sth is like描述；形容；把…备为：[VN]
<> Jim was described by
his colleagues as ‘unusual’.吉姆 被同事们称为“不寻的人。◊ [V wh-] Describe
how you didft.谈谈你是怎样做这事的。◊ [V -ing]
SeveraZ
people described seeing strange lights in the sky. ^ /I 人都说看到天上出现了奇异光芒。[also
VN -ing] 2[VN] {formal or technical t§) to make a movement which has a particular shape; to form
a particular shape ^ • 运动;.画出…图形；形成…形状：The sharfc described a
circie around the sh⑽Z 〇/•这条藍鱼围_绕着鱼群游 动。► de.scrib.able a办
| 53.9 desert
de-scrip-tion (Hf /di'skripjn/ noun 1 [C, U]〜（of sb/sth)
a piece of writing or speech that says what sb/sth is like; the act of writing
or saying in words what sb/sth is like 描写•文字 >;形容；说明：
to
give a detailed/full description of the procedure 序作详细的/详尽的说明◊ a
brie"genera〖 description 〇/ the SQ/hvare 钕彳4 的 _ 要 / 概 M 性说明◊ Poiice have issueda
descrfptio/i 〇/the gunman.—方发布通告，描述
了持枪歹徒的特征。■ ◊ ‘Scared
stifis an apt description 〇/how J/dt at t/iat
moment. 吓得早若木鸡”是对我当
W感受的贴切描述。◊ a personaZ pain thargoes beyond description (= is too great
to express in words)难以 ■言表的个—人痛苦.◊ the
noveZist’s powers 〇/ description 小也佘的叙述才能
〇 note at report
2 [C] of some, all, every,
etc.〜of some/ etc. type ■类型：boats of every ■descriprio^/aH descriptions
各_类型的船◊ TTieir money
came 介om trade
〇/some description.彳也们的钱是做某# 生意癒来的。medaZs, coins
and t/i/ngs 〇/that descrip-
tfon ^念章、硬币以及$如此类的东西IT»T?il answer/fit a
description (of sb/sth) to be like a particular person or thing %描述囟…相像：A chiid
answering the description of the missing boy was
found safe and well in London yesterday.昨天在伦敦发现了一个与失踪男孩情况相符的
孩子，妾然无恙。一mQre at beggar
v. de-scrip-tive /di'skriptiv/ adj.
t saying what sb/sth is like; describing sth描写的；叙述的；说明的：the descriptive passages in the novel
The term I used was meant to be purely descriptive (=not judging).我所用的措^是纯叙述性的（并非作 出判断）。2 (///igw/st/cs
谭言j saying how language
is actually used, without giving rules for how it should be used描写性的（描述语言的实际应用而非使用规则）
rsni
PRESCRIPTIVE
de.scrip.tor /di'skripte(r)/
now/?''(//ngw/s"cs 语言）a word or expression
used to describe or identify sth 叙词 des-cry /di'skrai/ verb
(des-cries,
des-cry-ing, des-cried, des.cried) [VN] (//ferary) to suddenly see sb or sth 突然看
到；突然发现
dese-crate /'desikreit/ verb
[VN] to damage a holy thing or place or treat it without respect 褒渎（圣物或圣
地 desecrated graves 被裹渎的坟墓 dese.cra.tion
/.desi'kreijn/
noun [U] ： the desecration of
a cemetery H 0 (figurative) the desecration of the countryside by new
roads新公路糟蹋了乡村
de-seg-re-gate /.dii'segrigeit/ verb
[VN] to end the policy of segregation
in a place in which people of different races are kept separate in
public places, etc.废除…'的 种族隔离►de.seg.re.ga.tion/_di:,segri’geijn/
now/7 [U] deselect /.diisi'lekt/ verb [VN] 1 if
the local branch of a political party in Britain deselects the existing
Member of Parliament, it does not choose him or her as a candidate at the next
election'(英国 ） 取消 （某人 ） 的候选人 资格，否决（某人）为下届候选人2 叩计)to
remove sth from the list of
possible choices on a com- puter menu (从计算机选单i )撤销选定► de.selec.tion
noun [U]
de-sen*si-tize {BrE also -ise) /.dir'sensataiz/ verb [VN] [usually1 passive] 1 〜sb/sth. (to sth) to make sb/sth iess aware of sth,
especially a problem or sth bad, by making them become used to it 使（尤对问题或负面_ 物 1 不■再敏感：People are
increasingly becoming desensitized to viotence on television.大众对电视上的暴 力镜头越来越麻木了。2 (tor/m/cfl/术语）to treat sb/sth so
that they will stop being sensitive to physical or chemical changes, or to a
particular substance 使脱 敏；降低敏感作用►
de.sen.si.tiza.tion，-isa^ion /.dii.sensatai'zeijn; NAmE
-ta'z-/ noun [U} des-ert 〇-w noun,
verb
m noun /'dezat; NAmE 'dezart/ — see also deserts [C, U] a large area of land
that has very little water and very few plants growing on it. Many deserts are
covered by sand.沙漠;荒漠；荒原：the