lost track

• v. 忘记(失去 ... 的线索)

lost track的用法和样例：

例句

用作动词 (v.)

1. Surely this lesson is not going to be lost upon us.
   这一教训我们肯定不会忘记。
2. There were so many cars that I lost count.
   有那么多的小汽车，以致于我忘记数到那儿了。