mechanism
noun [ C ] uk/ˈmek.ə.nɪ.zəm/ us/ˈmek.ə.nɪ.zəm/
(MACHINE PART)
C1 机械部件；机械装置
a part of a machine, or a set of parts that work together
These automatic cameras have a special focusing mechanism. 这些自动相机有特殊的对焦装置。
(SYSTEM)
C1 体制，结构方式
a way of doing something that is planned or part of a system
The mechanism for collecting taxes needs revising. 收税制度需要修改。
(BEHAVIOUR)
（处理棘手情况的）机制
a part of your behaviour that helps you to deal with a difficult situation
She's actually kind of insecure, and her rudeness is just a defence mechanism. 她其实很缺乏安全感，她的粗鲁不过是出于防卫心理。