When we came into the factory, our waterpump was being repaired by an old worker.
当我们进入工厂时，我们的水泵正由一个老工人在修理。
2
When we came into the factory, our waterpump was being repaired by an old work er.
当我们进入工厂时，我们的水泵正由一个老工人在修理。
3
When the entire factory power break down and cannot obtain the reliable power for the factory use from outside, there is a need to install the spare steam water supply pump.