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。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明,又迈进了一大步,因为这样一来,知识不仅能交流,而且能储存了。