But the cartilaginous fish and the
vipers1 produce their young alive externally, but first produce eggs internally. The egg is perfect, for so only can an animal be generated from an egg, and nothing comes from an imperfect one. It is because they are of a cold nature, not hot as some assert, that they do not lay their eggs externally.
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vipers
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| n.蝰蛇( viper的名词复数 )；毒蛇；阴险恶毒的人；奸诈者 |
参考例句： |
- The fangs of pit vipers are long, hollow tubes. 颊窝毒蛇的毒牙是长的空心管子。 来自辞典例句
- Vipers are distinguishable from other snakes by their markings. 根据蛇身上的斑纹就能把┹蛇同其他蛇类区别开来。 来自辞典例句
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