The problem with this method is that methane and nitrous oxide emissions fluctuate strongly in time and space.

这种方法的问题是，甲烷和一氧化氮的排放量在不同时间和空间波动很大。

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The problem is that these stable orbits would only exist once you have crossed the threshold of the event horizon, where time and space flow into one another.

问题是，只有曾穿过黑洞视界的临界才会存在稳定轨道，那里时间与空间会流入其他地方。

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It will have a lifespan of about 15 years, enough time to make a significant dent in our space debris problem.

太空舱的预期寿命约为15年，有足够的时间大大削减空间垃圾问题。

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"All the military can do is buy space and time and opportunity for a political resolution of a problem, " he said.

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He complimented me and my co-founder and said that he had been pitched by 7 or 8 other companies with a similar idea but this was the first time he actually heard from a team that understood the problem space and had a good solution.

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Time is running out to get serious about fixing the problem of space debris, experts say.

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