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。
- 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。
- 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。
- There are two breakers in this circuit. 这个电路里面使用了两个断路器。
- The bathtub drain needs repairing. 浴盆的排水管需要修理。
- A replaceable printed circuit board. 一种可替换的印制电路板。
- 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 circuit of the city walls is three miles. 环绕本市城墙的周长是三英里。
- 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
- There must be a break in the circuit. 电路中一定有断路。
- A short circuit will blow the fuse. 短路会烧断保险丝的。
- 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 short circuit put the machine out of action. 短路使机器停转。
- 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。
- The switches close the contacts and complete the circuit. 这些开关可使接触器接通电流形成回路。
- Military spending is a huge drain on the country's resources. 军费开支是国家资源的一大消耗。
- Boil the vegetables for 20 minutes and then drain off the water. 把蔬菜煮上20分钟，然后把水沥掉。
