1.foreign policy 外交政策

例句:He said his sudden focus on foreign policy was not motivated by presidential politics.
他说他突然关注外交政策并非受总统政治的驱使。

2.step up 提高；增加

例句:The meeting ended with a pledge to step up cooperation between the six states of the region.
会议以承诺加快这一地区六国间的合作而结束。

3.trade deal 贸易协议

例句:They have been negotiating a bilateral trade deal.
他们一直在商谈一项双边贸易协定。

4.So far 到目前为止

例句:What have you found so far?
你到目前为止发现了什么？