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。
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。
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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