记得上世纪80年代，亚马逊雨林似乎很快就要在世上消亡了，但难道这会导致大气中的氧含量相应下降，进而使人类受到威胁？

Remember the 1980s, when it seemed the Amazon rain forest wasn't long for this world — and that humanity was threatened as atmospheric oxygen levels correspondingly declined?

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他赞扬协会的目标，但预期这一协会很快会消亡。

He praised the union's aims but predicted its early demise.

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