3 sentences

1. 他们都哈哈大笑起来。

   tā​men dōu hā​hā dà xiào qǐ lai.

   They all burst out laughing.

   Source: Tatoeba

2. 哈哈哈，老爸太风趣了。

   hā​hā hā, lǎo​bà tài fēng​qù le.

   Ha ha, my dad is so funny.

   Source: CCMatrix

3. 我们都哈哈一笑，握手告别。

   wǒ​men dōu hā​hā yī xiào, wò shǒu gào​bié.

   We all laughed, shook hands, and said goodbye.

   Source: CCMatrix