动词短语
中文翻译：清空排水沟
同义词：
['drain', 'drain the culvert']
例句：
-
1.The workers were busy emptying the culvert to prevent flooding.
工人们忙着清空排水沟以防止洪水。
-
2. Before construction began, it was necessary to empty the culvert to ensure safety.
在施工开始之前，有必要清空排水沟以确保安全。
-
3.The engineers had to empty the culvert quickly before the rainstorm hit.
工程师们必须在暴风雨来临前快速清空排水沟。