As all animals and plants breathe air, we can be quite sure there is no life on the moon.
动植物都要呼吸空气，所以我们完全可以肯定月球上没有生命。
As all animals and plants breathe air, we can be quite sure there is no life on the moon.
动植物都要呼吸空气，所以我们完全可以断言月球上没有生命。
As all animals and plants breathe air, we can be quite sure there is no life on the moon.
动植物都要呼吸空气，所以我们完全可以断言月球上没有生命。
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