dry sump

例句：

1. 1. The house has a dry sump that can be used for emergency water backup.
   这所房子有一个干式防水层，可以用来应急储水。
2. 2.The dry sump is designed to prevent water from seeping into the basement during heavy rain.
   干式防水层设计用来防止在大雨时水分渗入地下室。
3. 3.The dry sump is an essential safety feature in any basement renovation project.
   干式防水层是任何地下室翻新项目中的一个必备安全特性。