A:Susan, I haven't seen you in the pub for a long time.
苏珊,我有好长一段时间没有在酒吧里看到你了。
B:I have a part-time job now, so I work in the evenings.
我目前有份兼职工作,所以我在晚上上班。
A:That explains it.
原来如此。