Now we have settled the terms of payment.
　　现在我们已经谈妥了付款条件。

　　Shall we have a talk about terms of payment today?
　　我们今天谈谈付款条件怎么样？

　　What is the mode of payment you wish to employ?
　　您希望用什么方式付款？

　　This is the normal terms of payment in international business.
　　这是国际贸易中惯用的付款方式。

　　We can't accept any other terms of payment.
　　我们不能接受其他的付款条件。

　　If you can't be more flexible, we won't accept your terms of payment.
　　如果你们不能灵活些，我们将不接受此种付款方式。 

　　Words and Phrases

　　payment terms 支付条件，付款方式

　　the mode of payment 付款方式

　　flexible 灵活的，多变的