emptying time

例句：

1. 1. The factory has been operating for more than a year, and we need to calculate the emptying time.
   工厂已经运营了一年多，我们需要计算清空时间。
2. 2.During the construction phase, we need to consider the emptying time of the wastewater treatment plant.
   在建设阶段，我们需要考虑污水处理厂的清空时间。
3. 3. The emptying time for this project is estimated to be three months.
   这个项目的清空时间预计为三个月。