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.
实用例句
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。来自柯林斯例句
2. Press the lever until you hear the catch engage.
压下挡杆，直到听到挡挂好。来自柯林斯例句
3. I put the coin in the machine and pulled the lever.
