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water; liquid; fluid; moisture; humidity; sap; juice
運動中はこまめに水分を取りましょう。
Let's drink water frequently during exercise.
水分補給をしないと熱中症になりやすい。
You can easily get heatstroke without hydration.
肌の水分を保つことが大切ですね。
It's important to keep your skin moisturized.