adj. heavier-than-air
因为二氧化碳比空气要重,纯净的二氧化碳可以使人窒息。
Carbon dioxide in pure form can asphyxiate because it is heavier than air.
二氧化碳泄漏会带来健康风险。 由于二氧化碳比空气重,因此可以在低洼地区和通风差的地区累积。
Spills would also be a health risk, since carbon dioxide is heavier than air, and so can build up in low-lying or poorly ventilated spots.
我用到“灾难性”一词,是想说二氧化碳比空气质量重,当二氧化碳形成的云层过重,空气锐减,所有下面的人都会窒息而死。
I say "catastrophic" because carbon dioxide is heavier than air, and a ground-hugging cloud would suffocate anyone it enveloped.
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