Word: 污水 (wūshuǐ)

下大雨后，街上全是污水。

Xià dàyǔ hòu, jiēshang quán shì wūshuǐ.

After the heavy rain, the street was full of sewage.

工厂不能把污水直接排进河里。

Gōngchǎng bùnéng bǎ wūshuǐ zhíjiē pái jìn hé lǐ.

Factories must not discharge sewage directly into the river.

工厂不能随便排放污水。

Gōngchǎng bùnéng suíbiàn páifàng wūshuǐ.

Factories must not discharge waste water as they please.

污水会破坏湖里的生态。

Wūshuǐ huì pòhuài húlǐ de shēngtài.

Sewage will damage the ecology of the lake.

污水侵害了附近的农田。

Wūshuǐ qīnhàile fùjìn de nóngtián.

The sewage has encroached on the nearby farmland.