英译汉:work hard at

英译汉:work hard at work hard at hard work hard at中文 work hard in还是work hard at? work hard at English是什么意思 I work hard at school. hard at work school I(? At work,I must work hard we work hard at school.英译汉在线翻译句子 是work hard at sth.还是work hard on sth. work hard at和work hard on 的区别 I work hard at schoo 和 At school Iwork hard work hard on , work hard at, work hard for 和work hard to的用法之差异 work hard at的汉语是什么 school hard at work连词成句 Please ____(work) hard at it. Work hard at home.应如何翻译 They work hard at _____(draw).