a civil engineer的用法和样例：
- Be he a civil engineer or an electrical engineer?
- Is he a civil engineer or an electrical engineer ?
- He is a civil engineer just like his father.
- He's neither a civil engineer nor an electrical engineer.
- I am writing to ask if you need a Civil Engineer in your company, starting July 15 of this year.
- A civil engineer who specializes in the design and construction of roads and highways.