原来是雌性背着雄性的尸体在空中盘旋。
The female was spiraling in the air with the corpse of the male butterfly attached.
只有雄性的寒蝉在夏末秋初时鸣叫。
是选雌性还是选雄性的狗呢？
美洲野鸭雄性的头冠为白色。
问题是它们都是雄性的。
谁说人猿一定是雄性的？
不是雄激素，而是雌激素，使雄性表现出雄性的行为。
Oestrogen, not testosterone, is what makes a male act like a male.
不是雄激素， 而是雌激素，使雄性表现出雄性的行为。
Oestrogen, not testosterone, is what makes a male act like a male
这个物种的雄性和雌性几乎无法分辨。
The male of the species is almost indistinguishable from the female.
这一物种的雄性有一条白色的尾巴。
他们想让这些雄性动物和野生的雌性动物交配。
这微小的联系可能已经足够让别的种群的雄性收到群新旋律了。
This minimal contact could be enough for males from another group to the new melody.
有趣的是，它们也表现出一贯的雄性在巢中育儿的模式。
Interestingly, they also show a consistent pattern of nest care by the male.
雄性老鼠如果饮食不健康，其雌性后代更容易患类似糖尿病的疾病。
Female offspring of male rats on bad diets are more likely to develop diabetes-like disease.
约有95%的雄性哺乳动物很少或根本不和幼子交流。
Some 95 percent of male mammals have little to no interaction with their children.
我相信自己能听到，有一头重达1 500磅的雄性北极熊正朝我走来。
I had convinced myself that I could hear a male 1, 500-pounder heading my way.
这只较小的雄性领着一只雌性列成纵队前进。
当雄性鹪鹩听到伯劳鸟的这种声音，他们就会做出回应，叽叽叽。
Every time male wrens hear that cry, they sing this in response [wren sound].
这个物种的雄性非常懒散。
每当雄性鹩莺听到屠夫鸟的啼叫，它们就会这样回应[鹩莺的声音]。
Every time male wrens hear that cry, they sing this in response [wren sound].
雄性灵长目动物陪自己的孩子玩耍，不过有时候它们会试图杀死幼仔。
Male primates play with the young, but sometimes they try to kill them.
这头豹狮是一头雄性美洲豹和一头雌狮的结晶。
The Leopon is the result of breeding a male leopard with a female lion.
有一种说法是雄性必须通过竞争来获得雌性的青睐。
其雄性蛙类会发出响亮的聒噪声，彻夜不息。
The males make a loud croaking sound that can be heard during the night.
狮虎兽是雄性狮子和雌性老虎的后代。
A liger is a hybrid cross between a male lion and a tigress.
那些正常的雄性老鼠只有18%的脂肪。
老实说，我不太喜欢一件屋子里弥漫着过多的雄性激素的味道。
I honestly think that there should never be too much testosterone in one room.
有这些额外的压力促使它成为超级强大的雄性来提升繁殖的成功率。
There is extra pressure to be a super male to improve reproductive success.
是后来的这些雌性鸟儿而不是雄性鸟儿最初的伴侣和雄性鸟儿一起生殖后代的。
Those are females other than the male's primary nest-mate with whom they sire offspring.
是后来的这些雌性鸟儿而不是雄性鸟儿最初的伴侣和雄性鸟儿一起生殖后代的。
Those are females other than the male's primary nest-mate with whom they sire offspring.
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