Let's make a bargain. I'll tell you what you want to know provided you don't breathe a word of it to anyone else.我们就这样讲定吧，如果你不向别人透露一个字，我就把你想知道的事告诉你。They bargained on a two-year term.他们讲定以两年为期。We made a bargain on the spot that I would do the work and he would supply the money.我们当场讲定，工作我来做而资金由他提供。