但请记住，大部分的草药中用作泡制有益健康药茶的活性成分，在水中的稳定性都会比其干燥时要低。

Remember, though, that most of the active principles that make herbs useful as health-maintaining or therapeutic teas are much less stable when they are dissolved in water than in their dried form.

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我们还需要更多的研究来了解在水中与细菌接触会对人类健康造成怎样的风险。

We still need more studies to tell what would be the risk to human health of this exposure through the water.

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为了向我们展示这里水域生态系统的健康程度，船长时而让我们看着从水中腾空而起的两米长的牛鲨，时而让我们注意候盘旋在头顶的栗鸢。

As evidence of the river system's health, our skipper points out a 2m bull shark as it leaps skyward and a brahminy kite wheels overhead.

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