| 释义 |
egg REPRODUCTIONegn [C]a rounded object, often with a hard shell, which is produced by female birds and particular REPTILES and insects, and contains a baby animal which comes out when it is developed（鸟、爬行动物以及昆虫的）蛋;卵The cuckoo lays her egg in another bird's nest.布谷鸟把蛋生在别的鸟的巢里。After fourteen days the eggs hatch, the young using their hard beaks to break open the shell.蛋孵了十四天之后，幼鸟用它们坚硬的喙把壳啄开。An egg is also a cell produced by a woman or female animal from which a baby might develop if it combines with sperm from a male.卵细胞Identical twins develop from a single fertilized egg which then splits into two.双胞胎是由单个受精细胞分裂成两个而形成的。
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