drainage of stagnant water的用法和樣例：
例句
- That is to say, the whole draining and water drawing function is brought into play secretly without the witness of us.
也就是說，整個排澇引水功能是在我們肉眼看不見的情況下，悄然地發揮著功效的。 - The calculation method of drainage modulus in agricultural diked area is inapplicable in urban diked area.
摘要農業圩區原有的排澇模數計算方法已不適用於城鎮圩區。
