| 单词 | lever |
| 释义 | lever n. & v. --n 1. a bar resting on a pivot, used to help lift a heavy or firmly fixed object. 2. Mech. a simple machine consisting of a rigid bar pivoted about a fulcrum (fixed point) which can be acted upon by a force (effort) in order to move a load. 3. a projecting handle moved to operate a mechanism. 4. a means of exerting moral pressure. --v 1. intr. use a lever. 2. tr. (often foll. by away, out, up, etc.) lift, move, or act on with a lever. Phrases and idioms lever escapement a mechanism connecting the escape wheel and the balance wheel using two levers. lever watch a watch with a lever escapement. Etymology: ME f. OF levier, leveor f. lever raise: see LEVY |
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