2 sentences

1. 我们坐热气球在天空中飞翔。

   wǒ​men zuò rè​qì​qiú zài tiān​kōng zhōng fēi​xiáng.

   We flew in the sky in a hot air balloon.

   Source: Dong Chinese Dictionary

2. 巨大的热气球在众人的欢呼声中缓缓升空。

   jù​dà de rè​qì​qiú zài zhòng​rén de huān​hū​shēng zhōng huǎn​huǎn shēng​kōng.

   The massive hot air balloon slowly ascended amidst the cheers of the crowd.

   Source: Dong Chinese Dictionary