mechanism

1. N-COUNT In a machine or piece of equipment, a mechanism is a part, often consisting of a set of smaller parts, which performs a particular function. 机械装置

...the locking mechanism. …锁定装置。

2. N-COUNT A mechanism is a special way of getting something done within a particular system. 机制

There's no mechanism for punishing arms exporters who break the rules. 对于违反规定的军火出口商还没有惩罚机制。

3. N-COUNT A mechanism is a part of your behaviour that is automatic and that helps you to survive or to cope with a difficult situation. (行为的) 机制

...a survival mechanism, a means of coping with intolerable stress. …一种生存机制，一种应对无法承受的压力的方法。