1 [I,T] to break or to make sth break so that a line appears on the surface, but without breaking into pieces (使)出现裂口或裂缝:
Don't put boiling water into that glass -- it'll crack.不要把滚热的水倒进去,那玻璃杯会裂的。The stone cracked the windscreen but didn't break it.那石块打裂了挡风玻璃,但没有把它砸碎。☞picture at chip 见chip插图
2 [T] to break sth open 打破;砸开:
Crack two eggs into a bowl.将两个鸡蛋打进碗里。
3 [I,T] to make a sudden loud, sharp sound; to cause sth to make this sound (使)发出劈啪声:
to crack a whip/your knuckles啪啪地甩鞭子;拧指关节
4 [T] to hit a part of your body against sth; to hit sb with sth (身体部份)撞到,碰到(某物):
She stood up and cracked her head on the cupboard door.她站起来,头撞着橱柜的门。She cracked the thief over the head with her umbrella.她用雨伞敲窃贼的脑袋。
5 [I] to no longer be able to deal with pressure and so lose control (由于不能应付压力而)精神崩溃,失控:
He cracked under the strain of all his problems.他在问题重重的压力下精神崩溃了。
6 [I] (used about sb's voice) to suddenly change in a way that is not controlled (指某人的声音)变粗,发哑:
Her voice cracked as she spoke about her parent's death.她说到父母去世时,声音沙哑了。
7 [T] (informal 非正式) to solve a problem 解决(某个问题):
to crack a code破译密码The police have cracked an international drug-smuggling ring.警方破获了一个国际毒品走私集团。
8 [T] to tell or make a joke 说笑话;开玩笑:
Stop cracking jokes and do some work!别再开玩笑了,干点活吧!
get cracking (Brit 英) (informal 非正式) to start doing sth immediately 立即行动:
I have to finish this job today so I'd better get cracking.我今天得完成这工作,所以最好还是马上开始。crack down (on sb/sth) (used about people in authority) to start dealing strictly with bad or illegal behaviour (指掌握权力者)严办,严惩,严厉对待(不良或违法的人或行为):
The police have started to crack down on drug dealers.警方已经开始严厉打击毒贩。crack up
1 (informal 非正式) to be unable to deal with pressure and so lose control and become mentally ill (由于不能应付压力而)失控,精神崩溃:
He cracked up when his wife left him.他的妻子一离开他,他便精神崩溃。
2 (slang 俚语) to suddenly start laughing, especially when you should be serious 突然大笑(尤指在应该严肃的时候)
*crack²
/kræk ||; kræk/noun
1 [C] a line on the surface of sth where it has broken, but not into separate pieces 裂缝;裂口:
a pane of glass with a crack in it有一处裂缝的窗玻璃 (figurative 比喻)They had always seemed happy together, but then cracks began to appear in their relationship.他们似乎一直相亲相爱,然后他们的关系开始出现裂缝。☞picture at chip 见chip插图
2 [C] a narrow opening 窄缝;狭长的开口:
a crack in the curtains窗帘间的缝隙
3 [C] a sudden loud, sharp sound 劈啪声;爆裂声:
There was a loud crack as the gun went off.开炮了,发出砰的一声巨响。
4 [C] a hard hit on a part of the body 猛烈的一击:
Suddenly a golf ball gave him a nasty crack on the head.突然之间,一个高尔夫球猛然打在他头上,难受极了。
5 [C] (informal 非正式) an amusing, often critical, comment; a joke 俏皮话;笑话:
She made a crack about his bald head and he got angry.她拿他的秃头开玩笑,使他生气。
6 [U] a dangerous and illegal drug that some people take for pleasure and cannot then stop taking 强效纯可卡因;强效纯古柯碱
the crack of dawn very early in the morning 破晓;黎明
have a crack (at sth/at doing sth)(informal 非正式) to try to do sth 尝试:
I'm not sure how to play but I'll have a crack at it.我不知道怎样玩,但我想试一试。
crack³
/kræk ||; kræk/adj
(used about soldiers or sports players) very well trained and skilful (指士兵或运动员)训练有素的,技术精湛的:
crack troops精锐部队He's a crack shot (= very accurate at shooting) with a rifle.他打步枪是个神射手。
crack1/kræk; kræk/v 1 [I,T] if something cracks or is cracked, it breaks so that it gets a line on its surface, and may then break into pieces(使)破裂﹐(使)裂开: The ice was starting to crack 冰开始破裂。cracked plates 有裂缝的盘子He cracked a couple of eggs into a pan. 他往平底锅里打了几个鸡蛋。see box at见 BREAK1 方框2 [T] to hit someone or something hard 重击﹔猛撞: crack sth on/against sth She fell and cracked her head on the step. 她摔了一跤﹐头重重地撞在台阶上。3 [T] informal to find the answer to a difficult problem [ solve ] 【非正式】解决〔难题〕: Yes! I’ve finally cracked it! 太好了! 我终于解决了!This new evidence could help detectives to crack the case . 这个新证据有助警探破案。4 [I] to become unable to deal with a situation because there is too much pressure on you〔因压力太大而〕失控﹐崩溃: She was beginning to crack under the strain of trying to do two jobs. 在打两份工的压力下﹐她开始崩溃了。5 [I,T] to make a sudden sharp sound, or to make something do this(使)发出爆裂声: He cracked his knuckles . 他把指关节弄得格格响。Thunder cracked overhead. 巨雷在头顶炸响。6 crack a joke informal to tell a joke【非正式】讲笑话7 get cracking BrE spoken to start doing something or going somewhere quickly【英,口】抓紧时间: It's late, so we’d better get cracking. 天晚了﹐我们最好抓紧时间。8 not all it's cracked up to be not as good as people think 不如人们所想的那样好: Life as a model isn’t all it's cracked up to be. 模特儿的生活没有人们想的那样好。crack down phr v to become more strict in dealing with a problem and punishing the people involved 严厉打击﹔制裁﹔镇压: +on The police are cracking down hard on violent crime. 警方正在严厉打击暴力犯罪。crack up phr v informal 【非正式】1 to become mentally ill because you have a lot of problems〔精神上〕垮掉 2 to start laughing 哈哈大笑
crack2n 1 [C] a thin line on the surface of something when it is broken but has not actually come apart 裂缝﹐裂纹: A huge crack had appeared in the ceiling. 天花板上出现了一条很大的裂缝。2 [C] a weakness or fault in an idea, system, or organization〔观点﹑系统﹑组织中的〕缺点﹐缺陷: +in The cracks in their relationship were starting to show. 他们关系中的裂痕开始显现了出来。3 [C] a very narrow space between two things or two parts of something 缝隙: +in a crack in the curtains 窗帘之间的缝隙4 [C] a sudden loud sharp sound 爆裂声﹐劈啪声: The firework exploded with a loud crack. 烟火啪地一声炸开了。5 [C] a clever joke or rude remark〔聪明的〕玩笑﹐俏皮话﹔粗鲁的话: +about Stop making cracks about my sister! 不要再拿我的姐姐开玩笑!6 [C] informal an attempt to do something【非正式】尝试: +at Okay, let's have a crack at fixing this bike. 好吧﹐我们试着来修这辆自行车吧。7 [U] a very dangerous illegal drug 强效可卡因8 at the crack of dawn very early in the morning 大清早﹐黎明
crack3adj [only before noun 仅用于名词前] having a lot of experience and skill 经验丰富的﹔技术高超的: crack troops 精锐部队He's a crack shot (=very good at shooting). 他是神枪手。
crackcrackcrackscrackedcracking1verb (cracks, cracking, cracked)1to break, but not into separate pieces: The glass will crack if you pour boiling water into it.This cup is cracked.2to make a sudden loud noisecrack down on somebody or somethingto become stricter when dealing with bad or illegal behaviour: The police are cracking down on drug dealers.crackcrackcrackscrackedcracking2noun1a thin line on something where it has broken, but not into separate pieces: There's a crack in this glass.2a narrow space between two things or two parts of something: a crack in the curtains3a sudden loud noise: a crack of thunder