深入思考的英文：
pore over

参考例句：

He was deep in thought.
他深入思考。

pore是什么意思：
n. 毛孔；气孔；细孔
v. 细看，细想；钻研；凝视

They clog the pores of the soil.
它们塞住了泥土的细孔。

There are usually no dorsal pores in the first few intersegmental grooves
身体前几个节间沟内经常无背孔。

He began to pore upon religious problems.
他开始考虑宗教问题。

The size of your pores is determined by the amount of oil they produce.
毛孔大小取决于其出油多少。

Use a pore minimizer to create a perfect skin look.
用缩小毛孔的产品创造一个完美的皮肤。

over是什么意思：
adv. （倒）下；从一边到另一边；越过；再；结束
prep. 在…之上；越过；在…的另一边（对面）；由于；从一边到另一边
adj. 过去的；结束的；外面的；上面的
v. 越过

chew over; think over
考虑;详细讨论

I have failed over and over and over again in my life.
我一生中失败了一次又一次。

"Over shoes, over Boots"
一不做,二不休

The police replayed footage of the accident over and over again.
警察一遍又一遍地重放事故的片段。

Have you run into the same type of boss over and over again?
你不断地跳槽，换了东家换西家，却发现你所面对的老板都一个样。