Pinyin-Yingyuu/Wǒmen shēnghuó zài yīgè jiàozuò Dìqiú de xīngqiú shàng
外觀
Wǒmen shēnghuó zài yīgè jiàozuò Dìqiú de xīngqiú shàng, zhè shì wǒmen tàiyángxì de yībùfèn. Dànshì wǒmen de tàiyángxì zài nǎlǐ? Tā zhǐshì Yínhéxì de yī xiǎo bùfèn.
We live on a planet called Earth, which is part of our solar system. But where is our solar system? It is only a small part of the Milky Way.