青蛙的受精率是多少?成活率是多少?一年可繁殖几次?
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![青蛙的受精率是多少?成活率是多少?一年可繁殖几次?](/uploads/image/z/8926334-62-4.jpg?t=%E9%9D%92%E8%9B%99%E7%9A%84%E5%8F%97%E7%B2%BE%E7%8E%87%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E6%88%90%E6%B4%BB%E7%8E%87%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E4%B8%80%E5%B9%B4%E5%8F%AF%E7%B9%81%E6%AE%96%E5%87%A0%E6%AC%A1%3F)
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