1·During the time she is paired to a male, the female allows no other males to copulate with her.
雌性与一雄性配对时，雌性不允许其他雄性与其交配。
—— 《柯林斯英汉双解大词典》
2·In these species, fertilized eggs develop into females and unfertilized eggs into males.
在这些物种中，受精卵发育为雌性，未受精卵发育为雄性。
3·The female birds have the same pattern as the males, but they are a little duller in color．
雌性鸟类与雄性鸟类有相同的图案，但是雌性鸟类的颜色更暗淡一点。
4·In studies, we found that when it comes to reproduction, freezing diminishes the mating performance of males.
我们在研究中发现，在繁殖方面，严寒会削弱雄性的交配表现。
5·It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.
可能是雄性可以利用稀少的类胡萝卜素进行免疫防御和解毒，或者吸引雌性。