Computers keep track of goods in stock ,of raw materials .第二个of能不能省略

keep track keep track keep track keep track Computers keep track of goods in stock ,of raw materials .第二个of能不能省略 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 英语翻译teachers use computers to organize their lessons,keep track of their students,produce materials,and teach with learning how to use computers is part of everyday lessons in most primary schools.some schools might get rid of textbooks and u Computers keep（） of goods in goods in stock ,of raw materials on hand ,and even ofComputers keep（） of goods in goods in stock ,of raw materials on hand ,and even of production process.A company B touch C track Dpace麻烦解释,谢谢 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?