短语词组短语Work Hard At Lessons 努力学功课work k at 从事;从事于work out at sth 计算出work hard at math 在数学上努力work hard at sth 在某一方面努力工作;努力做某事Work Hard At Studies 刻苦攻读Work hard at refueling 努力学work out at 总共达work hard at school 在学校努力学习 返回 work at