evaporation water loss

例句：

1. 1.The water in the glass is evaporating into the air.
   玻璃中的水正在蒸发成空气。
2. 2. The plant needs tobe kept moist to prevent evaporation.
   植物需要保持湿润以防止蒸发。
3. 3. Evaporation is a natural process thatoccurs when water turns into vapor.
   蒸发是一种自然过程，当水变成蒸汽时会发生。