"We've also got these big tanks full of oxygen and nitrogen, which are mixed to make air, and also water, so that we can provide everything that the astronauts need in the crew module to keep them alive on their journey."
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"previousInventoryETag": "5800c7d6-0000-0800-0000-6982949c0000",
文 | 牛刀财经NiuDaoCJ，作者丨万文广