1. Dong is a plumber by trade.
   董的职业是管子工。
2. Call the plumber to fix the toilet.
   给水管工打个电话来修理厕所
3. The plumber took out a wrench and tightened the bolt.
   修水管的工人拿出一把扳手拧紧了螺栓。
4. A qualified plumber should be consulted.
   请向有用资格证书的管道工咨询
5. We have to call a plumber to unblock the drain.
   我们得叫管工来通一通下水道。

　1个名词解释