为了在长期时间内提高氧气总量，有机物必须被埋入地底使得那些饥饿的虫子和动物吃不到。

To boost oxygen in the long term, organic matter must be buried beyond the reach of hungry bugs and beasts.

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这种形式的“自我管理”在长期存在的业余组织中是可能的，随着时间的推移，这些业余组织能够建立对社区成员以及整个社会的责任感。

This form of "self-governance" is possible within long-standing amateur organizations that, over time, are able to build a sense of responsibility to community members, as well as society in general.

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随着时间的推移，我们在长期记忆中建立并保持各种联系。

We build and maintain connections in our long -term memory over time.

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But they spent a lot of time, energy, and money on being sure that they would have a supply of water to hold them for a long siege.

他们花费了大量的时间,精力,和金钱来确保,在长期的围城中他们可以获得足够的水源

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