| [/kræk; kræk/] n 用法:
1 ~ (in sth) (a) line along which sth has broken, but not into separate parts 裂缝; 裂纹:
a cup with bad cracks in it 有很多裂纹的杯子 *
Don't go skating today there are dangerous cracks in the ice. 今天别去溜冰了--冰上有裂缝很危险. *
(fig 比喻) The cracks (ie defects) in the Government's economic policy are beginning to show. 政府经济政策上的失误已渐渐明显. =>illus at chip 见chip之插图.
(b) narrow opening 缝隙:
She looked through a crack in the curtains. 她透过帘子的缝隙观望. *
Open the door a crack, ie Open it very slightly. 把门打开一条缝（打开一点点）. 用法:
2 sudden sharp noise 爆裂声; 啪声:
the crack of a pistol shot 啪啪的手枪声 *
a crack of thunder 一声霹雳. 用法:
3 ~ (on sth) sharp blow, usu one that can be heard 重击（通常为可听到响声的）:
give sb/get a crack on the head 吧的一声打在某人的头上[头上挨了一下子]. 用法:
4 ~ (about sth) (infml) clever and amusing remark, often critical; joke 俏皮话（常为挖苦人的）; 笑话:
She made a crack about his fatness. 她取笑他肥胖. 用法:
5 ~ at sth/doing sth (infml) attempt at sth 试做某事物:
Have another crack at solving this puzzle. 再试一试把这个难题解决了吧. 用法:
6 (idm 习语) the crack of `dawn (infml) very early in the morning 黎明; 破晓:
get up at the crack of dawn 黎明即起. the crack of `doom the end of the world 世界末日:
(fig 比喻) To get a bus here you have to wait till the crack of doom, ie an extremely long time. 在这儿真要等到世界末日（很久很久以後）才能有公共汽车. a fair crack of the whip => fair1. paper over the cracks => paper. crack 2
adj [attrib 作定语] very clever or expert; excellent 精明能干的; 技艺高超的; 优秀的:
a crack regiment 劲旅 *
He's a crack shot, ie expert at shooting. 他是神枪手. crack 3
[/kræk; kræk/] v 用法:
1 [I, Tn] (cause to) develop a crack1(1a) or cracks （使）开裂, 破裂, 爆裂:
The ice cracked as I stepped onto it. 我一踩冰就裂了. *
You can crack this toughened glass, but you can't break it. 这种韧化玻璃只裂不碎. *
She has cracked a bone in her arm. 她手臂有一处骨裂. *
a cracked mug 有裂纹的缸子. 用法:
2 [Tn, Cn.a] break (sth) open or into pieces 砸开或砸碎（某物）:
crack a nut 把坚果砸碎 *
crack a safe, ie open it to steal from it 砸开保险箱 *
crack a casing open 里啪啦打开包装. 用法:
3 [Tn, Tn.pr] sth (on/against sth) hit sth sharply 猛击某物:
I cracked my head on the low door-frame. 我的头撞在低矮的门框上了. 用法:
4 [I, Tn no passive 不用於被动语态] (cause sth to) make a sharp sound （使某物）发出爆裂声; （使某物） 啪作响:
crack a whip, one's knuckles 抽鞭子、 屈指节 啪作响 *
The hunter's rifle cracked and the deer fell dead. 猎人的枪一响, 鹿即倒地而死. 用法:
5 [I, Tn] (cause sb to) cease to resist; (cause sth to) fail （使某人）屈服; （使某事物）垮台:
The suspect cracked under questioning. 嫌疑分子在审问之下招供了. *
They finally cracked the defence and scored a goal. 他们终於突破了防守, 射进一球. 用法:
6 [Tn] (infml) solve (a problem, etc) 解决（问题等）:
The calculation was difficult, but we finally cracked it. 计算起来很费劲, 然而我们终於解决了. *
crack a code, ie decipher it 破译密码. 用法:
7 [I] (of the voice) change in depth, loudness, etc suddenly and uncontrollably （指嗓音）突然而失控地改变音色、 音量等:
In a voice cracking with emotion, he announced the death of his father. 他悲恸失声地宣布了父亲去世的消息. *
A boy's voice cracks (ie becomes deeper) at puberty. 男孩在青春期嗓音改变（声音变粗）. 用法:
8 [Tn] (infml) open (a bottle, esp of alcoholic drink) and drink its contents 开（瓶, 尤指酒瓶）饮用. 用法:
9 [Tn] (infml) tell (a joke) 说（笑话）. 用法:
10 [Tn] (chemistry 化) break down (heavy oils) by heat and pressure to produce lighter oils 使裂化（利用高温高压从质量较重的石油里制取轻油）. 用法:
11 (idm 习语) cracked `up to be sth (usu negative 通常作否定) (infml) reputed to be sth 号称:
He's not such a good writer as he's cracked up to be. 他并不像人们所吹捧的那样是什麽杰出的作家. get `cracking (infml) begin, esp energetically 开始; （尤指）大干起来:
There's a lot to be done, so let's get cracking. 工作很多, 咱们开始干吧. 用法:
12 (phr v) crack down (on sb/sth) impose more severe treatment or restrictions on sb/sth （对某人[某事物]）严加处置或限制:
Police are cracking down on drug dealers. 警方现对贩毒分子严惩不贷. crack up (infml) lose one's physical or mental health （身体）垮掉; （精神）崩溃:
You'll crack up if you go on working so hard. 你继续这样拚命干下去, 身体会吃不消的. |