If you're an electrical contractor, your employees probably wirea ceiling fan the same way other electricians do.
如果你是一个电气工程类的承包商，你手下的雇员给吊扇走线的方法肯定和其它电工大同小异。
Having read an electrical book. he began to repair the electric fan.
看了一本有关电的书籍后，他开始修理电扇。
Having read an electrical book. he began to repair the electric fan.
看了一本有关电的书籍后，他开始修理电扇。
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