With quite up-to-date instruments people found out how hot star are, how far, and what colors.

借助非常现代的仪器，人们已经发现星星的温度，距离和颜色。

youdao

With quite up-to-date instruments people found out how hot star are, how far, and what colors.

借助非常现代的仪器，人们已经发现星星的温度，距离和颜色。

youdao