He loved history and he had been totally absorbed in medieval england since the death of his wife ten years ago . 他热爱历史，自十年前他妻子去世以后，一直埋头于对英格兰中世纪的研究。
A dutch diamond cutter was busy at his craft while the car twisted its way down some pretty bumpy roads . 当汽车在一条相当崎岖不平的道路拐来拐去时，一名荷兰的钻石加工技师竟在埋头干他的手艺。
Margaret meanwhile spent her days immersed in the law, studying tomes, writing essays and attending lectures at the council of legal education . 同时，玛格丽特埋头学习法律，研究学术巨著，写论文，到法律教育委员会上课。
It was in this month something over twenty years ago that i, ludwing horace holly, sat one night in my rooms at cambridge, grinding away at some mathematical work, i forget what . 那是二十多年前的事了。也就是在这个月份的一天晚上，我，路德维格霍勒斯霍利，正坐在剑桥大学我的房间里埋头攻读数学著作，具体读的是本什么书，我记不大清楚了。
He plods away at his lessons until he learns them 他埋头学习功课直到学会为止。
" countersunk head nib bolts " ploughshare " type 商业性通用螺栓制造.埋头尖螺栓
Anyone who only studies won ' t make a good doctor 只埋头学习的人成为不了好医生，
Countersunk head screws - head configuration and gauging 埋头螺钉.头部外形和测量
120 degrees countersunk head rivets in aluminium alloys 铝合金制120埋头铆钉
Where the students can concentrate on their schoolwork 让学生可以埋头于学业
