crack up

英 [kræk ʌp]

美 [kræk ʌp]

（因精神压力大而）垮掉，崩溃; （使）大笑

柯林斯词典

• PHRASAL VERB (因精神压力大而)垮掉，崩溃
  If someonecracks up, they are under such a lot of emotional strain that they become mentally ill.
  1. She would have cracked up if she hadn't allowed herself some fun.
     她若是没给自己找点乐趣的话，早就崩溃了。
• PHRASAL VERB (使)大笑
  If youcrack upor if someone or somethingcracksyouup, you laugh a lot.
  1. She told stories that cracked me up and I swore to write them down so you could enjoy them too...
     她讲了几个令我捧腹大笑的故事，我一定要写下来，好让你也乐乐。
  2. We all just cracked up laughing.
     我们都不禁哈哈大笑起来。

英英释义

verb

• laugh unrestrainedly
  Synonym:break up
• rhapsodize about
• suffer a nervous breakdown
  Synonym:crackcrock upbreak upcollapse

双语例句

• Expression for fatigue crack life is set up which takes energy of plastic deformation for crack propagation as the damage variable.
  建立以裂纹扩展塑性变形能为损伤变量的疲劳裂纹寿命表达式。
• The problem that aims at to carve the body structure wall body crack carried on a study, investigating the wall body crack output part and form, analyzing the reason of the wall body crack, tally up to prevent from the measure of the wall body crack.
  提要针对砌体结构墙体裂缝的问题进行了探讨，调查了墙体裂缝产生的部位及形式，分析了墙体裂缝的成因，总结了防止墙体裂缝的措施。
• The paper explores the main cause of concrete crack and comes up with the measures to control and deal with it according to concrete situation.
  文章对混凝土裂缝的主要成因进行了探讨，并针对具体情况提出了一些控制、处理措施。
• Family problems made him crack up.
  家庭问题弄得他精神崩溃了。
• But there was this perfect crack all the way up to the top.
  那儿一条岩缝刚好一直延伸到山顶。
• Little kids just crack me up with the things they say.
  小孩子们说的话真的让我捧腹不已。
• Pressure of work caused John to crack up.
  工作压力使约翰身体垮了。
• I kept a straight face as long as I could, but I finally had to crack up.
  我尽量板着面孔，但最后还是控制不住失声大笑起来。
• As our researchers found that when people comes to their middle and old age, most of them can't have a high-quality sleep because their body diathesis decline and the physiological function slowly crack up.
  因为我们的科研人员发现，人到中老年，随着身体素质的下降和生理机能的渐衰，一般睡眠质量都不高。
• The comedian made his audience crack up with laughter.
  喜剧演员令他的观众笑得要命。