| 词汇 | jack |
| 释义 | jack noun uk/dʒæk/ us/dʒæk/ (EQUIPMENT) [ C ]起重器，千斤顶 a piece of equipment that can be opened slowly under a heavy object such as a car in order to raise it off the ground You need a car jack in order to change a tyre. 给汽车换轮子得用千斤顶。 (CARD) [ C ] (also knave)（纸牌中的）J牌，杰克 a playing card with a picture of a man on it. It has a lower value than the cards showing a king or queen the jack of clubs 梅花杰克 (BALL) [ C ]（草地滚木球戏或法国式滚球戏中的）靶子球 a small ball towards which other balls are rolled or thrown in the games of bowls or boules (ELECTRICAL) [ C ]（电）插座，插口，塞孔 a connection between two pieces of electrical equipment |
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