tán / pàn / qián / zuò / le / chōng / fèn / zhǔn / bèi / zhè / bǐ / jiāo / yì / wěn / cāo / shèng / suàn

谈判前做了充分准备，这笔交易稳操胜算。

With thorough preparation before the negotiation, this deal is a sure win.