Jack

jack n 1 (usu portable) device for raising heavy weights off the ground, esp one for raising the axle of a motor vehicle so that a wheel may be changed （通常指便携式）起重器, 千斤顶（尤指更换机动车车轮时用的）. 2 ship's flag flown to show nationality 船上表示国籍的旗子 the Union Jack, ie the flag of the United Kingdom 英国国旗. 3 Jack familiar form of the name John 杰克（约翰的昵称）. 4 (also knave) (in a pack of playing-cards) card between the ten and the queen （纸牌中的）杰克, J（介於王后与十点之间） the jack of clubs 梅花J. 5 (in the game of bowls) small white ball towards which bowls are rolled （滚球戏中）作靶子的?quot;浊? 6 (idm 习语) before you can/could say Jack Robinson => say. every man jack => man. a jack of `all trades person who can do many different kinds of work but not necessarily well 博而不精的人. jack v (phr v) jack sth in (sl 俚) leavesth readily; abandon (work, etc) 打算离开; 放弃（工作等） I can't concentrate any more. I'm going to jack it in. 我再也无法集中精神了. 我不打算干了. jack sth up (a) raise sth using a jack1(1) 用千斤顶顶起某物 to jack up a car 用千斤顶把汽车顶起. (b) (fig infml 比喻, 口) increase (salary, payment, etc); raise 增加（薪金, 报酬等）; 提高 It's time you jacked up my allowance. 您该给我增加点儿零用钱了. (c) (infml 口) arrange or organize sth that is in disorder 把凌乱的事物安排好或料理好 Everything's falling apart; the whole system needs jacking up. 一切都乱了, 整个系统有待整顿.

①插孔、插座 ②千斤顶,起重器