Colmatage
(=colmation)淤灌, 放淤
🗣️ 情景例句
We also like to know
我们还想知道，
Forgive me for interrupting, but I have a question.
对不起我插个嘴，我有一个问题。
Exploring really deep caves is not a task for the Sunday afternoon rambler.
探测非常深的洞穴不是那些在星期日下午漫步的人所能胜任的。