keep track

keep track keep track keep track keep track keep track with是什么意思 I keep track of the keep up the track of keep track of还是keep trace of? keep track of 最好有例句说明 keep your goal on track中文意思 track track keep track of 后面接什么填词！do you understand? 请问一下keep track 有什么其他的引伸义吗? set down 和 keep track of 用法的区别set down 和 keep track of 都有记录记下的意思 那具体有什么区别呢? 拿几个词造句 快keep track oftake advantage ofcatch up sprint Computers keep track of goods in stock ,of raw materials .第二个of能不能省略 Track by Track