Through the years my birth mother had become my heroine.
通过这几年我的亲生母亲已经成为我心目中的女英雄。
They breathe through lungs, not through gills, and give birth to live young.
他们通过肺呼吸而不是用鳃； 直接分娩幼仔。
Birth and death are only doors through which we pass, sacred thresholds on our journey.
出生与死亡，我们不过是穿梭在一道又一道庄严的门槛之间。
They breathe through lungs, not through gills, and give birth to live young.
它们用肺呼吸，而不是鳃，属于胎生。
They are developed well before birth and remain through life.
出生前abo抗原已发育完好且会终其一生。
They are developed well before birth and remain through life.
出生前abo抗原已发育完好且会终其一生。
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