hygrol

例句：

1. 1. The room was too dry; we needed a hygrol to keep it moist.
   房间太干燥了，我们需要一个湿度调节剂来保持它的湿润。
2. 2. The plant needs a certain amount of humidity to grow well.
   植物需要一定的湿度才能生长良好。
3. 3. The manufacturer claims that their hygrol product can effectively reduce the moisture loss in the air.
   制造商声称他们的湿度调节剂产品能有效减少空气中的水分流失。