lever

英 [ˈliː.vər]      美 [ˈlev.ɚ]
  • n. 杠杆;控制杆
  • vt. 用杠杆撬动;把…作为杠杆
  • vi. 用杠杆撬
  • n. (Lever)人名;(法)勒韦;(英)利弗;(德)莱韦尔
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lever 杠杆

来自拉丁语levare,升起,举起,来自PIE*legwh,轻的,可举起的,词源同light,levitate.引申词义杠杆。

lever (n.)
c. 1300, from Old French levier (Modern French leveur) "a lifter, a lever," agent noun from lever "to raise," from Latin levare "to raise," from levis "light" in weight, from PIE root *legwh- "light, having little weight; easy, agile, nimble" (cognates: Sanskrit laghuh "quick, small;" Greek elakhys "small," elaphros "light;" Old Church Slavonic liguku, Lithuanian lengvas "light;" Old Irish laigiu "smaller, worse;" Gothic leihts, Old English leoht "light" (adj.)). As a verb, 1856, from the noun.
1. An elevator mechanic can work the machinery directly by turning this lever.
电梯修理工可以转动这根杠杆直接操作机器。
2. Press the lever until you hear the catch engage.
压下挡杆,直到听到挡挂好。
3. I put the coin in the machine and pulled the lever.
我把硬币投入机器,拉动控制杆。
4. He pushed a lever that speeded up the car.
他挂挡加快了速度。
5. Push the tiny lever on the lock.
按一下锁上的小柄。

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