埋头的英文：
be engrossed in
bury
immerge
immerse oneself in

参考例句：

We all knuckle down to study just before final exam.
就在期末考前，我们开始埋头苦读。

Sinker nail
埋头钉

Countersink head screw
埋头螺丝

to bury oneself in a book
埋头书中

He immersed himself totally in his work.
他埋头于工作。

He sweat out his time on the job.
他埋头于工作中。

He was sitting with his head buried in a book.
他坐着埋头看书。

She buried herself in her work.
她埋头于工作。

He was sitting with his head buried in a book
他坐着埋头看书

He buried himself in his books.
他埋头书本。

engrossed是什么意思：
adj. 全神贯注的
v. engross的过去式和过去分词；全神贯注

The student is engrossed in his book.
这名学生正在专心致志地看书。

She is deeply engrossed in an interesting story.
她正全神贯注于一篇有趣的故事。

The contract has been engrossed ready for signature.
合同已正式写成就等签署。

immerge是什么意思：
v. 浸入，埋头

There is no need to immerge further into this topic.
我们无须对这题目作更深入的探讨。

You can imagine the freedom and comfort to immerge in cocoa milk like delicious Cappuccino, and have a relaxed mood!
你可以想像，沉浸在宛如美味卡布其诺的可可牛奶中，尽情享受舒缓、轻松的心境，那是一种怎样的自在和惬意！