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。
Tim is an engineer.He is working for a big firm and he has already visited a great number of different places in Australia.
蒂姆是个工程师,正在一家大公司工作,并且已经去过澳大利亚的不少地方了。