I must have lost track of the time.

我一定是忘记钟点了。

He lost track of the times his toenails were uprooted.

他不得不连根拔掉脚趾甲，具体是什么时候，他已经不记得了。

I'm sorry. I've lost track of the time.

抱歉 我没注意看时间。

I'd lost track of the time, and I hurried downstairs to take the potatoes out and put the steak in to broil.

我把时间给忘了，于是赶紧下楼把土豆取了出来，把牛排放了进去。