... 令牌环网与 FDDI 环与域 Rings and Fields 环与书 The Ring and the Book ...
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rings and fields
戒指和田野
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The radiation belt, which contains "two concentric rings of charged particles trapped by Earth's magnetic fields" doesn't affect current astronauts going to and from space because they are moving too fast to be hit by the radiation.
ENGADGET: Space elevator ride may kill humans due to ionizing radiation
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