negotiate

你应该为我们客户谈判争取最好的条件。

You should ___negotiate the best terms for our client.

您还应该为我们客户协商最好的条款。

You should also ___negotiate the best terms for our client.

外交官们正试图在两国之间谈判达成和平协议。

Diplomats are trying to ___negotiate a peace agreement between the two countries.