The sewage treatment plant has an impeccable drainage system.

污水处理厂有完善的排水系统。

This drainage area is polluted by chemical pollutants.

这个排水区域被化学污染物污染了。

These plants died due to the poor drainage in this area.

该地区土壤排水能力差，导致这些植物都死了。

The drainage system broke down because of too much rain.

由于降雨太多 排水系统出故障了

The area has good natural drainage.

这个地区有良好的天然排水系统。

The bricks were bedded in sand to improve drainage.

沙里埋入砖块，以改进排水系统。

The city planner decided to build an underground drainage system.

城市规划师决定建一个地下排水系统。

In the summer, bull trout forge 50 miles upstream from Lake Koocanusa to spawn in the Wigwam River drainage in British Columbia.

夏天，鳟鱼从 Koocanusa 湖逆流而上50英里，到不列颠哥伦比亚威格沃姆河的排水系统产卵。

Both the negative pressure drainage vessel and the drop stitch are easier to cause infection.

负压引流管和缝线都容易引起感染。