英[dʒæk]美[dʒæk]
记忆方法
词源词根法
常见人名，来自古法语Jacques，来自拉丁语Jacobus，即圣经人物Jacob.后该人名被极大的通用化，代指各种叫不出名字的人或物，类似于中国的张三李四。来自人名Jack，代指各种叫不出名字的人或物，如千斤顶，插座等。扑克J来自人名Jack，骑士，武士。
noun(名词)
双解例句
noun(名词)
小知识
If you're ever stranded beside the highway with a flat tire, what you need is a jack and a spare tire. With a jack, you can lift the car slightly off the ground and change the tire.
Most cars have an emergency jack in the trunk, and repair shops have larger jacks, sometimes called “garage jacks,” that can raise the car high enough for a mechanic to work underneath it. To lift this way is to jack something. Other kinds of jacks include game pieces and playing cards. In Middle English, as now, the name Jack was used for “ordinary guy,” a meaning that transferred to basic tools, generic men, and male animals.