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科学美国人60秒 SSS 路易丝斯劳特是国会食品安全领导者
Louise Slaughter Was Congress's Food Safety Champion Legislation to restrict the current overuse, I would say abuse, of antibiotics by farmers who raise livestock for human consumption.Louise Slaughter, member of Congress from upstate New York, in 20
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科学美国人60秒 SSS 火星真的会撞地球?
Chaotic Orbits Could Cause Catastrophic Collision Isaac Newton said, I can calculate the motion of heavenly bodies, but not the madness of people. He meant that while people can be unpredictable, the planets are just the oppositethey glide through sp