钻研

The boy puzzled his way through geometry.

那男孩煞费苦心地钻研何学。

The book was the result of ten years’ assiduous research.

那本书是十苦心钻研的成果。

The professor's erudition came from long years of study.

这位教授的学问来累月的钻研。

Marjorie and Heather spent hours poring over cookery books.

马里和希瑟花了时的时间钻研烹调书。

The professor is hammering at an economic problem.

教授正在钻研一经济学问题。