hydrationKK [haɪˋdreʃən] /haɪˈdɹeɪʃən/發音名詞1補充水分、水分攝取Proper hydration is essential during long runs in hot weather.在炎熱天氣長跑時,適當補充水分非常重要。2保濕This cream provides all-day hydration for dry skin.這款乳霜能為乾燥肌膚提供全天保濕。3水合作用化學The hydration of cement releases a large amount of heat.水泥的水合作用會釋放大量熱能。