mechanics of writing

例句：

1. 1. The car mechanic fixed the engine in no time.
   汽车修理工很快就修好了发动机。
2. 2.He is a skilled mechanic who can fix any car.
   他是一名熟练的机械师，能修任何汽车。
3. 3.Mechanics are responsible for maintaining the safety of machinery and equipment.
   机械师负责维护机械设备和设备的安全。