1N-COUNT [usually singular]机械装置;机件 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;机件
3N-COUNT (人为生存、对付困境的)机制,行为方式 A mechanism is a part of your behaviour that is automatic and that helps you to survive or to cope with a difficult situation. (人为生存、对付困境的)机制,行为方式
...a survival mechanism, a means of coping with intolerable stress.