Hundreds of millions of litres of water flow down the river.

河里流入几亿升的水。

This barrel holds 25 litres.

这只桶能盛25升。

The tank takes 50 litres.

这罐能容50升。

Two water tanks provide a total capacity of 400 litres.

两个水箱的总容量为400升。

The villagers are rationed to two litres of water a day.

村民每天的用水量限定为两升。

Put it in water (about 4 litres).

把整只鸡放进水里（大约4升水）