4 sentences

1. ‎你知道什么是彗星吗？

   ‎ nǐ zhī​dào shén​me shì huì​xīng ma?

   Do you know what a comet is?

   Source: OpenSubtitles

2. 这是去阻止彗星的全体队员。

   zhè shì qù zǔ​zhǐ huì​xīng de quán​tǐ duì​yuán.

   This is the crew that will stop the comet.

   Source: OpenSubtitles

3. 这颗彗星的运行轨迹非常特殊。

   zhè kē huì​xīng de yùn​xíng guǐ​jì fēi​cháng tè​shū.

   The trajectory of this comet is very unusual.

   Source: Dong Chinese Dictionary

4. 哈雷彗星每七十六年出现一次。

   Hā​léi huì​xīng měi qī​shí​liù nián chū​xiàn yī cì.

   Halley's Comet appears once every seventy-six years.

   Source: Dong Chinese Dictionary