他从事科学研究。

Tā cóngshì kēxué yánjiū.

He is engaged in scientific research.

教授在进行科学实验。

Jiàoshòu zài jìnxíng kēxué shíyàn.

The professor is performing a science experiment.

他对科学很感兴趣，经常看相关的书。

Tā duì kēxué hěn gǎn xìngqù, jīngcháng kàn xiāngguān de shū.

He is very interested in science and often reads related books.