这位机械师帮我修好了摩托车的刹车问题。

The ___mechanic fixed the brake problem on my motorcycle.

我哥哥是个机修工，负责修理工厂设备。

My brother is a ___mechanic who fixes factory equipment.

我们的汽车坏了，需要找一位机械师。

Our car is broken and we need a ___mechanic.