“mechanically operated”可以造什么句，mechanically operated造句

我们都没想到真正的黑道导演可能压根就不听音乐。

a mechanically operated piano that uses a roll of perforated paper to activate the keys.

A usually saucer-shaped bell that is struck with a mechanically operated hammer.

mechanically operated

Self-sealing quick release coupling with or without mechanically operated valves.

control gear and signal, level-crossing, mechanically or electromechanically operated

electromechanically operated fingers