2 sentences

1. 地面的水气向上蒸腾。

   dì​miàn de shuǐ​qì xiàng shàng zhēng téng.

   The water vapor from the ground is rising and evaporating.

   Source: Dong Chinese Dictionary

2. 雪花是水气在空中形成的结晶。

   xuě​huā shì shuǐ​qì zài kōng​zhōng xíng​chéng de jié​jīng.

   Snowflakes are crystals formed from water vapor in the air.

   Source: Dong Chinese Dictionary