Definition: a part of a piece of equipment that does a particular job Level: C1
时钟的上弦机制坏了。
The clock's winding ___mechanism was broken.
大多数椅子的调节机制无法正常工作。
Most chairs' adjusting ___mechanism failed to work properly.
门上的锁定机制非常安全。
The locking ___mechanism on the door is very secure.
