Desludging
[化] 除去淤渣
🗣️ 情景例句
Here I am.
我在这儿！
More of our worries come from within than from without.
烦恼发乎内者多于发乎外。
The deepest holes of all are made for oil, and they go down to as much as 25,000 feet.
在所有洞穴中，为寻找石油所钻的洞是最深的，这些洞可深达25，000英尺。