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- Male birds tread the females. 雄鸟与雌鸟交尾。
- The male birds are more colourful than the females. 这种鸟雄性比雌性更加色彩艳丽。
- The male bird strutted in front of the female. 雄鸟在雌鸟面前趾高气扬地走着。
- The male bird performs a sort of mating dance before copulating with the female. 这种雄鸟在与雌鸟交尾以前要跳一种交欢舞。
- The male bird is distinguished from the female by its red beak. 雄鸟喙红色，有别于雌鸟。
- The male bird is easily distinguishable from the female. 这种鸟很容易辨认雌雄。
- The male bird is barely distinguishable from the female. 雄鸟和雌鸟几乎无法辨别。
- The male bird perform a sort of mating dance before copulate with the female. 这种雄鸟在与雌鸟交尾以前要跳一种交欢舞。
- The male bird is usually bigger and more brightly coloured than the female. 雄鸟通常比雌鸟大，颜色更鲜丽。
- The female bird hatches the eggs, and the male bird feeds the chicks. 母鸟（负责）孵蛋，公鸟（负责）喂食幼鸟
- Male birds into the color difference wax wax, membrane male, the female blue membrane green wax for meat brown film. 成鸟雌雄区别在于蜡膜的色彩，雄性蜡膜呈青蓝色，雌鸟蜡膜为肉褐色。
- Every day the children tread the same path through the woods. 孩子们每天都走林中的同一条路。
- This bird is majestic, proud with much expression and as the male bird walks and dances to the female in courting. 这种鸟是庄严的，以丰富的表态方式为荣，雄性孔雀会向雌性行走和跳舞来求爱。
- The male bird performs a sort of mating dance be rre copulating with the female. 这种雄鸟在与雌鸟交尾以前要跳一种交欢舞.
- The male birds are usually the ones that take the initiative to attract the female birds,so their plumage has to be colourful. 因为通常雄鸟是主动“追求”雌鸟的一方，因此它们的羽毛必须是艳丽一些。
- Every day he trod the same path to school. 他每天都走同一条路上学。
- The male bird has a red spot on its beak. 雄鸟喙上有一个红点。
- The male voice is deeper than the female. 男性的嗓音比女性的低沉。
- His success in amateur theatricals led him on to think he could tread the boards for a living. 他业余演戏很成功，他因此觉得自己可以以演戏为生。
- The male is physically stronger than the female. 男性在身体上要比女性强壮。
