But imagine if a genetic mutation arose in one member of a female-female pair that enabled her to distinguish her egg from that laid by her partner, says Bailey.
但是请想象一下，如果一定数量的雌雌伴侣某个基因发生突变，并且使它有能力区别哪个是自己产的卵，哪个是它同性伙伴的，贝利说。
Take an egg carton. Using a pair of scissors and a pot of paint turn it into an alligator.
拿个装鸡蛋的盒子，用一把剪刀和一桶油漆把它变成一只鳄鱼。
Among the dowry items, besides silk stuff, there must be a pair of young mulberry trees, silkworm and egg sheets.
嫁妆里，除了丝织品，必须要有两颗桑树幼苗，蚕和卵纸。
For instance, a pair of mobiles each with 2 Watts of transmitter output will take three minutes to boil a large free range egg.
例如，一对输出功率为2瓦特的手机使用3分钟可以煮熟一只鸡蛋。
For instance, a pair of mobiles each with 2 Watts of transmitter output will take three minutes to boil a large free range egg.
例如，一对输出功率为2瓦特的手机使用3分钟可以煮熟一只鸡蛋。
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