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| NOUN |
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| /dreɪn/ |
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| 1 | C a pipe or passage through which water or waste liquid flows away 排水管；排水沟；下水道 |
| The drain’ s blocked again. 排水管又堵塞了。 |
| | 1a | plural the system of pipes and passages that take away water or waste liquid in a town or city （城镇的）排水系统 | |
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| 2 | singular something that uses a lot of something such as money or supplies 消耗财物的事物 |
| +on The war was becoming a serious drain on the nation’ s resources. 战争对国家资源的消耗日益严重。 |
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| 3 | singular a situation in which a lot of people or things leave a country or organization （国家或机构中大量的人或物的）外流，流失 |
| +of The government pledged to stop the drain of capital overseas. 政府承诺制止资金流往海外。 |
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| 4 | C medical a tube that carries liquid away from your body , for example one that carries blood away from an injury （将体内液体排走的）导管，引流管 |
| a chest drain 胸腔导流管 |
| PHRASE |
| - | down the drain informal
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| completely lost or wasted |
| 完全丧失；被浪费掉 |
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| I hate to think of all that hard work going down the drain! 所有的辛劳都付诸东流，我真不愿去想！ |
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