The US space agency has released a "pre-solicitation" for what is expected to be a hotly contested contract to develop a spacecraft to orbit Mars and relay communications from the red planet back to Earth.
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A healthful plant-based diet is linked to an 11% lower risk of breast cancer and a 28% reduction in mortality for those already diagnosed. New research from 70,000+ participants shows that high intake of vitamins B2, C, and magnesium, combined with low sodium, significantly improves survival.，详情可参考safew官方版本下载
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