然而，并不是所有的人都知道噪音也是一种污染，对人类健康也是有害的。

However, not all the people know that noise is also a kind of pollution, and that is harmful to human health, too.

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它提供了一种双重效益的可能性，既能阻止有害活动，又能为政府提供收入。

It offers the possibility of a double benefit—discouraging harmful activities, while also providing the government with revenue.

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与其他方法相比，生物防治的优点是它提供了一种成本相对较低、有害副作用最小的永久性防治系统。

The advantage of biological control in contrast to other methods is that it provides a relatively low-cost, perpetual control system with a minimum of detrimental side-effects.

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A Christian civilization was deeply at the root of this cluster of ideas we call Manifest Destiny, as was a virulent kind of nationalism that boomed after the War of 1812 and through the 1820s into the 1830s.

基督教文明是我们所称的命运天定,及其相关思想的核心,它是一种有害的民族主义,在1812年战争后兴起,并流行于十九世纪二十年代和三十年代

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