https://online2.tingclass.net/lesson/shi0529/0008/8532/p54.mp3
https://image.tingclass.net/statics/js/2012
I lost track of the time and missed the last bus.
我忘記了時間還錯過了尾班車。
lose track of something 失去...的線索,忘記...或搞不清某事的狀況。
I lost track of how many people I invited to this party.
我邀請了多少人到這派對我自己也搞不清了。