水上摩托车除了固有的操作风险外，逐渐被证明一种环境公害。

In addition to the inherent operational hazards of water scooters, they are proving to be an environmental nuisance.

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如果我们想在其中任何一种环境中生存一段时间，我们都需要机械辅助。

If we wish to survive in either for any length of time, we need to have mechanical aids.

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他们认为，开始适应水生生活的陆地动物很快就会变成既不是鸟也不是鱼，无法在任何一种环境中生存。

They contended that land animals that began to adapt to aquatic life would soon be neither fowl nor fish, incapable of surviving in either medium.

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That is to say, we no longer have the kind of mind which flourishes in nature, in a natural environment.

也就是说，我们不再有一种思维,它根植于自然，自然环境中。

耶鲁公开课 - 文学理论导论课程节选

And, you've undoubtedly heard a lot in the public press, and even in the political dialogue such as it is these days that hydrogen might be on environmentally friendly fuel.

毫无疑问你已经在公开新闻上，甚至在政治的对话上听到过了,比如最近这些天,氢气是一种环境友好的燃料。

麻省理工公开课 - 固态化学导论课程节选

So for me it has been trying to find a place for religious groups and particularly our ministry to talk about the outdoors, the environment, about nature, in a meaningful way.

所以我一直在寻找一个平台,在这个平台上，宗教团体，尤其是我们全体牧师,可以和大家以一种更有意义的方式，来讨论户外活动，环境，和自然。

普林斯顿公开课 - 人性课程节选