1.back for 支持

He ran back for an umbrella.
他跑回去拿雨伞。

And I yelled back for him to be sure and listen to the tape.
我只是喊回去告诉他我确实想死，还嘱咐他一定要听我的故事。
2.as well 也；同样地；还不如

We might as well bunk down in this hotel.
我们还是在这家旅馆找床铺睡觉为好。

If he winks at you,you may wink back as well.
如果他向你使眼色的话，你也可以使眼色以示回答。

3.prime minister 首相，总理

Did you listen in to the Prime Minister yesterday evening?
你昨晚收听首相的广播讲话了吗?

He met with the Prime Minister of Japan for an hour and a half.
他和日本首相会晤了一个半小时。

4.encourage to 鼓励

I encourage to join the list and contribute your thoughts to the project.
我鼓励您加入这个列表，并提供您对这个项目的想法。

In short, no matter the personal cost, black woman are encourage to marry "down" before they marry "out.
一句话，不管个人做出什么牺牲，黑人女性在“出嫁”之前，都被鼓励先“下嫁”。