| 单词 | pulley |
|---|---|
| 音标 | ['puli] |
| 解释 | n.滑轮；滑车 |
| 红宝书 | 【英】 n.滑轮，滑车(a wheel used to transmit power by means of a band, belt, cord, rope, or chain passing over its rim[轮缘]) 【记】 pull(拉)＋ey |
| 字源 | pulley (n.) late 13c., from Old French polie, pulie "pulley, windlass" (12c.) and directly from Medieval Latin poliva, puliva, probably from Medieval Greek *polidia, plural of *polidion "little pivot," diminutive of Greek polos "pivot, axis" (see pole (n.2)). As a verb from 1590s. |
| 不择手段背单词 | n. 滑轮(用一个拉绳穿过的有槽的轮子, 通过改变拉力的方向而拉起重物) 【记】读: 不累－用滑轮组可以省力 |
| 趣味全助记 | 【记】pull 拉 + 音：力，物理学中拉力常用滑轮表示 |
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