1. She pulled out the plug and let the water drain away. 她拔起塞子放掉了水。
2. 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。
3. The water will soon drain away. 水很快就会流尽。
4. The water will soon drain away [off]. 水很快就会流掉。
5. Hope and energy drain away over the years. 岁月逐渐使精力和希望枯竭了。