moving part的用法和样例：
例句
- Much of the energy supplied to complicated machine with many moving parts is wasted in overcoming this opposition.
供给一台具有许多可转动部件的复杂机器的能量，有很多是在克服阻力中损耗掉了。 - The moving part of an electromagnetic device such as a relay, buzzer, or loudspeaker.
电枢电磁装置的移动部分，如继电器，蜂音器或扬声器
