She pulled out the plug and let the water drain away.

她拔起塞子放掉了水。

《牛津词典》

The total volume of water in the saturated sample must therefore be thought of as consisting of water that can, and water that cannot drain away.

"因此，人们认为充满水分的岩石样本的总含水量既包括可能会渐渐流失的水分，也包括不会流失的水分。

youdao

The water will soon drain away.

水很快就会流尽。

《新英汉大辞典》

He said there was concern for more low lying areas as the water begins to drain away.

BBC: Somerset floods: Warnings remain after heavy rain

The more viscous a fluid, the longer it will take to drain away.

ECONOMIST: How tree frogs keep their grip

Water held in the reservoir, upstream of the city on the River Laver at Birkby Nab farm, will gradually drain away downstream.

BBC: Ripon's ?14.4m flood defence scheme completed