I have no idea what they're going to say, so I'll have to play it by ear.
我一点不知道他们将会说些什么,所以我只好见机行事。
When a student recently saw two workmen using a pneumatic drill outside his university, he immediately telephoned the police and informed them that two students dressed up as workmen were tearing up the road with a pneumatic drill.
最近有个学生看见两个工人在学校门外用风钻干活,马上打电话报告警察,说有两个学生装扮成工人,正在用风钻破坏路面。