Detecting e-bike battery fires, for example, is particularly difficult, since these can unfold suddenly. Some researchers are working on new ways of sensing smoke and fire, perhaps even more quickly than before. But, take note: any certified, working smoke alarm is better than nothing.
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回家过年前，我还特意体验了一家L4级无人驾驶出租车的服务：从上海世纪公园东南角前往上海科技馆地铁站——某上市运营商在浦东新区画出了一块面积不大的运营范围，两年前我曾在广州南沙体验过他们的服务。，更多细节参见同城约会
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