The man is a space scientist. 这个人是太空科学家。

to make a public speech 发表演说

to learn about words in dictionary great painter 伟大的画家

sightseeing 观光

I believe my son is a genius.

我的(未来的)儿子想必是个天才。

The author of these books is a great writer.

这些书的作者是位伟大的作家。

to speed-read 速读

to live in the library 过着研究的生活.

to teach how to drive a car 教人驾驶汽车.

He is studying the ecology of ameba.

他在研究阿米巴(一种线性变形虫)的生态。

The man is a piano accompanist. 这个人是钢琴伴奏者。

She is singing in practice. 她在练习唱歌。

violinist 小提琴演奏家.

to conduct an orchestra 指挥交响乐.

scholar 学者

He has majored in biology. 他专供生物学。

Teacher. He is teaching. 老师。正在教书。

Pupil. He is studying. 学生。正在学习。

to type a term paper 用打字机打期末报告

The target shooting requires the power of concentration.

射击需要集中精神。