Data centers—warehouse-size facilities packed with servers, power gear, and cooling equipment that provide computing power—are nothing new. They have been spreading across the world since the early 1990s, powering everything from your iPhone’s camera to international financial markets.
苹果发布iPhone 17e与新款iPad Air，定价不变主打中端市场
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We next study trends in unemployment, matching our occupation-level measures to respondents in the Current Population Survey.
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