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2021-05-21
A UN report has revised world economic growth projections as a result of robust rebounds in China and the US, but warned against fragilities in other economies in the context of COVID-19. In its
随着科技的发展，如今盲人不靠拐杖也能独立行走了。奥地利研发出了一款智能导航鞋，可以探测到4米远的障碍物，堪称盲人的出行利器。 Austrian company Tec-Innovation recently unveiled smart shoes that u
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