Backtrace
[计] 回溯
🗣️ 情景例句
Does this store sell bubble bath?
这家店里卖泡沫浴液吗？
What do you know?
你懂什么？
Imagine a railway station, a bus company or a cinema, which many people need to ring to find out the times of trains, buses or films.
想一想，有许多人需要打电话到火车站、汽车公司或电影院，以便弄清火车、汽车的起始时间或电影放映的时间吧。