astronomy 高考四级六级考研GMAT

Physics and astronomy are cognate sciences.

物理与天是互有关联的科。

Do you know anything about astronomy?

你懂天吗?

Astronomy -s from astrology.

天是由占星术演变而来的。

Astronomy is an abstract subject.

天是一门深奥的科。

Mathematics is connected with astronomy.

数与天有联系。