可引用的發言段落Citable transcript turn
#147509
講者：Speaker:
Yeah, people with really, really cheap PM 2.5 air pollution sensors. Then it’s just citizen science. It’s spreading.
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可引用的發言段落Citable transcript turn
講者：Speaker:
Yeah, people with really, really cheap PM 2.5 air pollution sensors. Then it’s just citizen science. It’s spreading.
j 下一段next turnk 上一段previous turn