Sludge removal
[化] 淤渣清除
🧩 词语组成解析
n. 软泥, 泥泞\\n[化] 沉淀物; 泥状沉淀
🗣️ 情景例句
but it is.
但实际上很要紧。
Two blacks do not make a white.
两个乌黑不等于一个清白。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。