We all know how to keep the body healthy and how to keep it healthy, right?

我们都知道怎样保持身体的健康还有怎样保持牙齿卫生，对不对？

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This fluid helps protect the nerve tissue, keep it healthy, and remove waste products.

脑脊液保护着神经组织，维持着它的健康，并去除废弃产物。

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Your body is at its peak when you're young. Keep it healthy, or you'll soon regret it.

你的身体在你年轻的时候处于鼎盛时期。所以你得保持身体健康，否则以后你就会后悔了。

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Whatever your current credit score is, you can help keep it healthy by making appropriate financial choices and by taking the time to check your credit report regularly.

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Medical device manufactures use it to keep us healthy.

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It turns on genes that keep you healthy, and turns off genes that promote heart disease, prostate cancer, breast cancer, and diabetes.

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