lever

Rich countries use foreign aid as a lever to achieve political aims..富国利用对外援助作为达到政治目的的手段。

release lever,解锁手柄；分离杆

lever principle,杠杆原理

brake lever,制动杆

lever handle,手柄；杠杆手柄；杆式手柄；手柄操纵杆

hand lever,手柄；手制动杆；柄；手杆

control lever,控制杆；操纵杆

lever type,adj. 杠杆式

shift lever,变速杆

gear lever,[机]变速杆

lever arm,杠杆臂；活动臂

connecting lever,连接棒；连接杆；连接杠杆

lever rule,杠杆定则（定律）

valve lever,阀门杆；阀杠杆

真题例句...The levers and light were set up in exactly the same way except that this time it was only Doris who could see the light indicating which lever to press first...CET62012.6阅读理解

真题例句...the dolphins were supposed to press the left-hand lever followed by the right-hand one...CET62012.6阅读理解