The application of the mind to the gaining of knowledge.

求学；读书。

Any particular object of careful thought; any branch of learning.

(可数常用复数)研究的对象；学科。

Earnest and careful examination of a particular question.

研究。

Written account of such an examination.

研究报告；心得。

Deep meditation; reverie.

沉思；默想。

A preliminary sketch for a picture.

(绘画的)草稿；素描。

A piece for a special kind of practice.

【乐】练习曲。

A room set apart for mental work.

书房；书斋。

To devote oneself closely to books and learning, or to any subject of inquiry.

读书；攻读。

To use thoughtful care in planning.

细心计划。

To meditate; reflect.

深思熟虑。

To examine closely in order to learn thoroughly; look at closely and thoughtfully.

言读；审视。

To learn, or memorize the details of.

学习；熟记。

To investigate carefully.

仔细调查。

To consider attentively or in detail.

仔细考虑。