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

• Numerical examples show that high brittleness index can improve the bearing capacity stability of the structure and the existence of crack set up in advance will increase the ductility of the structure, but it may result in the reduction of ultimate bearing capacity.
  数值计算表明：增加脆性指数可以提高结构的承载稳定性；初始预制缝可以增加结构延性但会降低极限承载力。
• 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。
• The comedian made his audience crack up with laughter.
  喜剧演员令他的观众笑得要命。
• 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。
• 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。
• If John goes on working and worrying as he has been doing he's bound to crack up sooner or later.
  如果约翰照这样继续工作和忧虑下去，他的健康迟早一定会崩溃。
• It is unlikely that a crack squad set up in 2006 to investigate manipulated data will, or can, catch all offenders.
  2006年为调查人为操纵数据而组建的一个精锐小组，不太可能抓住所有违规者。
• 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。
• 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。
• The manganese sulfide inclusions to a different degree make the resistance curves of crack propagation move up or down, but there is not obvious influence on the slops of resistance curves of crack growth.
  不同程度的硫化锰夹杂使得裂纹扩展阻力曲线上下移动，而对阻力曲线的斜率无明显影响；