1.
counterbore for hexagon socket head bolt
内六角头螺栓埋头孔
2.
To make a countersink on or in.
在…上或…内造埋头孔
3.
To drive(a screw or bolt)into a countersink.
将钻或螺栓置入埋头孔
4.
insert(a screw or bolt)into such an enlarged hole
将（螺钉或螺栓）旋入埋头孔中.
5.
A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下
6.
He flung himself on [into] his work.
他投入 [埋头] 工作。
7.
sunk screw
【机】埋[沉]头螺丝
8.
Whenever he is free, he will bury his nose in a book.
他一有空就埋头看书。
9.
"Now, let's get down to work."
现在，让我们埋头工作吧！
10.
He is all application now, all study.
他埋头用功，潜心学习。
11.
In those days all I cared about was my career.
那时候我只顾埋头工作.
12.
He plugged away at his work.
他埋头干他的工作。
13.
She lost herself in a book.
她在埋头读一本书。
14.
Bob was up to his chin in homework.
鲍勃在埋头做功课。
15.
He addicts himself to English study
他埋头于英语学习。
16.
His paper would then engross his thoughts.
然后，他就会埋头看报了。
17.
He sank his head in his hands.
他把头埋入双手之中。
18.
Linda has been burying herself in doing her experiment.
琳达一直埋头做试验。