His interest in astronomy led him to build his own telescope.

他对天文的兴趣促使他自己动手制作了一望远镜。

Physics and astronomy are cognate sciences.

物理与天文是互有关联的科。

Do you know anything about astronomy?

你懂天文吗?

Mathematics is connected with astronomy.

数与天文有联系。

Astronomy is an abstract subject.

天文是一门深奥的科。

Astronomy -s from astrology.

天文是由术演变而来的。