Underdrainage
n. 暗渠排水, 地下排水
🗣️ 情景例句
There is not a shadow of a doubt that they did it.
毫无疑问，是他们干的。
Ill air slays sooner thant the sword.
污浊的空气杀人比刀还要快。
Her clothes are here, or at least most of them.
她的衣服在这里，至少大部分衣服还在。