| 短语 | screw down |
| 释义 | screw down1. 拧紧;钉住(某物)：A mechanic screwed down the cover of a diesel engine to prevent dust from falling into it.一个修机工拧紧内燃机的机罩以防止灰尘落入机内。2.降低(价格、租金等)：Tenants asked their landlord to screw down his rent，they threatened to remove if he did not. 房客们要求他们的房东降低租金，他们威胁说，如果房东不降低租金，他们就搬家。 |
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