為何美國以色列此刻出手？伊朗進入「生存模式」，結局仍充滿變數
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“中国人不仅教会我们种地，更教会我们如何组织起来，共同发展。”合作社成员罗希·萨马特对记者说，“以前我们种水稻只是为了糊口，现在，我们找到了一条通往富裕的道路。”
But what if it’s not fine? Even back in 1996, before a single component of the ISS was launched into orbit, NASA foresaw the possibility of an even worse worst-case scenario: an uncontrolled reentry. The crux of this scenario involves multiple systems failing in an improbable but not completely impossible cascade. Cabin depressurization could damage the avionics. The electrical power system could go offline, along with thermal control and data handling. Without these, systems controlling coolant and even propellant could break down. Unmoored, the ISS would edge slowly toward Earth, maybe over a year or two, with no way to control where it is headed or where its debris might land. And no, we could not save ourselves by blowing the station up. This would be extremely dangerous and almost certainly create an enormous amount of space trash—which is how we got into this hypothetical mess in the first place.