银河

yín hé nián shì yín hé xì xuán zhuǎn yī cì de shí jiān

银河年是银河系旋转一次的时间。

A galactic year is the time the galaxy takes to rotate once completely.

dì qiú shì yín hé xì zhōng de xīng qiú zhī yī

地球是银河系中的星球之一。

The earth is one of the planets in the galaxy.

wǒ men kě néng huì zài yín hé xì zhōng fā xiàn qí tā shēng mìng xíng shì

我们可能会在银河系中发现其他生命形式。

We may find other life forms in our galaxy.

yín hé xīng tuán

银河星团

star cluster in the Milky Way

yín hé biàn xīng

银河变星

variable star in the MIlky Way