think straight: 头脑清楚的、正确的认为
Lately I cant think straight.
最近我的思绪很没有条理。
We all know what a night of missed sleep does to our brain: We can't think straight or concentrate;
我们都知道一夜无眠会怎样影响我们的大脑：我们不能连续思考也不能全神贯注

break into: 闯入、侵入
The thieves broke into the bank and stole the safe.
盗贼非法强行闯入银行偷了保险箱。

go through: 经历、遭受
You didn't know what I have gone through.
你不知道我遭受了什么苦难。

look back: 回顾、回忆
He still feels quite guilty when he look back on the past.
想起过去，他仍然感到很内疚。

pop into: 急匆匆走进
The image of the woman popped into his head out of the blue.
那个女人的形象突然出现在他的脑海里。
She popped the letter into the envelope.
她急忙地把信放进信封里。