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The ISS does have its own defenses, of course. Fabric-y buffers envelope some of the systems, and a bumper called the Whipple Shield helps blunt impact. That shield is only built to stop debris up to about 1 cubic centimeter, though, and the debris tracker is only designed to catch pieces 10 cubic centimeters and larger. In other words, there’s a gap in defenses.，推荐阅读体育直播获取更多信息
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"In other countries they might spend a lot of time at work, but that doesn't mean they work a lot. Changing the culture and the mindset is the biggest challenge."