dip in: 浸泡
He ran down the beach to take his usual dip in the sea.
他跑过海滩，像往常一样到梅里去泡一泡。

deal with: 处理，安排
In dealing with suicidal youngsters, our aims should be clear...
在对待有自杀倾向的青少年时，我们的目标应当很明确。

big deal: 大事，重要的事
I felt the pressure on me, winning was such a big deal for the whole family...
我感觉到了压力，取胜对全家来说是如此重要。

used to: 过去常常
You used to work under chairman shin?
你以前在申主席手下做事？

dress up: 打扮得漂漂亮亮
You do not need to dress up for dinner...
你们不必特意盛装赴宴。

make up: 编造，捏造
I'm not making it up. The character exists in real life.
我没有凭空捏造，这种人现实生活中确实存在。