1. The mechanic couldn't resist a parting joke:
    "分手时，机械师还禁不住开了个玩笑：

2. He´s an automobile mechanic.
    他是汽车修理工。

3. He is a famous mechanic.
    他是一位著名的技工。

4. A mechanic strapped me into my harness, and plugged in the system that would allow me to breathe and talk at 35,000 feet.
    一名机械师帮我系上降落伞背带，插上能让我在35,000英尺高空呼吸和谈话的机械系统。