He is in the study.

他在书房。

Is she in the study?

她在书房吗？

She is in the study.

她在书房里。

Are they in the study?

它们在书房里吗？

Four treasures of the study.

文房四宝。

Marine biology is the study of underwater life.

海洋生物学是研究水下生命的学科。

Dad writes in the study.

爸爸在书房里写作。

He reads in the study every morning.

他每天早上在书房里读书。

We need to define the scope of the study.

我们需要定义研究的广度。

She is fascinated by the study of kun.

她对昆虫的研究非常着迷。