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杰克专心费力做数学.用英语怎么说？

杰克专心费力做数学.

Jack fagged away at his math.

相关词汇
jack fagged away at his math

jack

n. 千斤顶，[信]插孔，插座，男人，纸牌中的J；vt. 提高，增加，用千斤顶顶起，抬起，抬起，使想起；vi. <美>用篝灯打猎（或捕鱼）；

fagged

adj. 累坏了的；

away

adv. 离开，远离，在远处，消失；adj. 不在的，遥远的，客场比赛；

at

prep. （表示位置）在，在（某时间或时刻），以，达， 向，朝；n. 阿特（老挝辅币单位，100 阿特 = 1 基普）；

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

math

n. 数学（等于mathematics）；
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