Ya?l: I hear a lot about global warming, but how do scientists take the Earth’s temperature?

Ya? l: 我听到很多关于与全球变暖的事情，但科学家们是怎么测量地球温度呢？

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Ya?l: Hey Don, did you know that soil deterioration is one of the main contributors to global warming?

嘿，D。你知道吗，土壤变质是全球变暖的主要元凶之一？

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