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| NOUN |
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| /dʒæk/ |
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| 1 | C a piece of equipment used for lifting and supporting a heavy object , for example a car when you are changing a tyre 起重器；千斤顶 |
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| 2 | C a playing card that has a picture of a young man on it and is worth more than a ten and less than a queen （纸牌中的）J 牌，杰克 |
| the jack of diamonds 方块杰克 |
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| 3 | C a type of electrical plug that fits into a socket with one hole 插头 |
| | 3a | a socket that a jack fits into 插座 | |
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| 4 | C a small white ball that you roll larger balls towards in the game of bowls （滚木球戏中的）小白球 |
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| 5 | C a small metal or plastic object with six points used for playing jacks （抛接子游戏中的）有六个尖的金属（或塑料）小物件 |
| | 5a | U a children’ s game in which you pick up small objects after you have bounced a ball and before you catch it again 抛接子游戏（一种儿童游戏，游戏者在拍一下球后、接住球前拣起小物件） | |
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| 6 | jack U AMERICAN impolite anything or nothing at all 什么也没有 |
| PHRASES |
| - | every manjack (of them) BRITISH old-fashioned
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| every person in a group |
| 人人；每个人 |
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| - | I’ m all right, Jack BRITISH informal
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| used for saying that your situation is good and you do not care that other people’ s is not |
| 老兄，我自己很好（用于表示只求自己没事而不管别人怎么样） |
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