hydrate|hydrated|hydrating

记得在户外活动时多喝水保持水分。

Remember to ___hydrate frequently when you're outdoors.

保持面部肌肤水分很重要。

It’s important to keep your facial skin ___hydrated.

这种面膜能有效补水，特别适合干燥的冬季使用。

This face mask is great for ___hydrating your skin, especially in dry winter months.