work at

时间:2017-04-05 分类:高频短语 APP:学子斋答案APP下载

work at 致力于,努力做

【例句】

◆ He has worked at his subject for many years.他研究这门学科已经好多年了。 

◆ He is working at a new invention.他正致力于一项新发明。