您要查找的是不是：
- That maths exam I took was a regular brain drain. 绞尽脑汁的数学测验，我真是绞尽了脑汁。
- Pull (out) the plug and let the water drain away. 拔掉塞子，把水放掉。
- Analysis for Drain Protection Principle by Using Two Residual Current Mutual-inductor 用两零序电流互感器的漏电保护原理
- They are digging trenches to drain the water off. 他们正在掘沟排水。
- They are digging trenches to drain the water away. 他们正在掘沟排水。
- She subscribes to an animal protection society. 她捐款给一个动物保护协会。
- The coffee grains plugged up the kitchen drain. 咖啡渣堵塞了厨房的排水道。
- The drain is blocked and needs unplugging. 排水管堵塞了，得疏通一下。
- The bathtub drain needs repairing. 浴盆的排水管需要修理。
- We subscribe to an animal protection society. 我们定期捐款给一个动物保护基金会。
- All hands turned out to repair the terraces and drain the water. 所有劳动力都出来整修梯田，排除积水。
- The young in our society need careand protection. 我们社会的年轻人需要受到关怀和爱护。
- All of our best laid plans are down the drain. 我们所有精心布置的计划都付之东流
- He was paying out half his profits as protection. 他把所得利润的一半交给歹徒作为保护费。
- They lobbied on the environmental protection issue. 他们就环境保护问题在议员中进行了游说。
- A sewer or drain crossing under a road or embankment. 涵洞横在公路或堤岸下面的下水道或排水管
- A thin jacket is a poor protection against cold. 一件单薄的夹克衫不足以御寒。
- The settlers banded together for protection. 移民联合起来保护自己。
- If you leave college, all that money has gone down the drain! 你要是中断大学的学习，你花的钱就会都付诸东流了。
- He's devoted his whole life to the protection of the rare animals. 他终生献身于珍稀动物的保护。
