2 sentences

1. 句号表示一个句子结束了。

   jù​hào biǎo​shì yī​ge jù​zi jié​shù le.

   A period indicates that a sentence has ended.

   Source: CCMatrix

2. 如果注释很短，结尾的句号可以省略。

   rú​guǒ zhù​shì hěn duǎn, jié​wěi de jù​hào kě​yǐ shěng​lüè.

   If a comment is short, the period at the end can be omitted.

   Source: CCMatrix