1、breakdown——（关系的）破裂，（计划的）失败？<商务英语>？【breakdown】：<1>（关系的）破裂；（计划、讨论等的）失败，结束？例：breakdown in negotiation？ 谈判破裂？ (商务英语重要术语)例：The breakdown of talks between the US and EU officials. 美国和欧盟官员间谈判的破裂？<2>（汽车或机器的）故障，损坏？例：Our car had a breakdown on the motorway. 我们的汽车在高速公路上抛锚了。

2、<3>神经衰弱；精神崩溃？例：They often seem depressed and close to emotional breakdown. ？ 他们经常显得很沮丧，精神濒于崩溃的边缘。

3、<4>分类；细目列表？例：The organisers were given a breakdown of the costs. ？ 向组织者提供了一份开支细目。

4、<5>分解 (术语)？例：The breakdown of protein in the digestive system. 蛋白质在消化系统中的分解。