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只需一个精子就可以使卵受精。
It only takes one sperm to fertilize an egg.
《柯林斯英汉双解大词典》
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精子与卵子结合开始受精过程。
The sperm fuses with the egg to begin the process of fertilization.
《牛津词典》
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精子与卵子结合开始受精过程。
The sperm fuses with the egg to begin the process of fertilization.
《牛津词典》