小鸡与母鸡都是鸡，可是因其大小雄雌，在功能上还是有其差异的。
Both chick and hen are chooks, but their function is different due to size and gender.
他的肉身代表了生命的雄雌两方面。
小鸡与母鸡都是鸡，可是因其大小雄雌，在功能上还是有其差异的。
Both chick and hen are chook, but their function is different due to the size and the gender.
生命在受精卵的时候就已经开始分雄雌了(剩下的我就不是很清楚了)。
The life begins with gender upon fertilization. But I am afraid that is...
因为这种手能用雄雌榫的方法与现有的任何假肢相联接，所以，它适合低位或高位截肢者使用。
Because this hand can be connected to any existing artificial limb by tenon and mortise, it can be suited for low or high position amputated persons.
它是雄的还是雌的？
“他们，嗯，我想，雄的站在雌的后面，他们就是这样做的，穆兰”，我不耐烦地回答道，我感到失望，自己只能说“他们就是这样做的”。
"They, well, I think the male stands behind the female and... and... they just do, Mulan," I said, exasperated, and disappointed that "they just do" was the best I could do.
雌老鼠，神经元所具有的CRF接受器比雄老鼠更为紧密地受到激素的约束，因此对CRF的反应也就比较大。
In female rats, neurons had receptors for CRF that bound more tightly to the hormone than in male rats, and so were more responsive to CRF.
而雄蝶不走也只是浪费时间和精力，因为这只雌蝶的肚子里已经有一只小毛毛虫了。
And the male would just be wasting his time and energy with her, since there would already be a caterpillar bun in her oven.
一旦这些鳗鱼抵达了目的地，雌鳗鱼就会产卵而雄鳗鱼就会给它们授精。
Once the eels arrive, the females lay their eggs and the males fertilize them.
为了测试他的这感觉，帕克的团队于1997年到2002年再夏威夷海域附近观察了42个竞争性的鲸鱼群，这些一条雌鲸被多条雄鲸所包围。
To test this hunch, Pack's team observed 42 competitive groups--those with one female surrounded by varying numbers of males--in the waters around Hawaii from 1997 to 2002.
科学家们还试图利用雌蟒在繁殖期发出的气味引诱雄蟒掉入陷阱。
Scientists are also trying to lure male pythons into traps using the scent that females emit at breeding time.
而在雌鼠占绝对优势的分组中的雌鼠与雄鼠在一起时，这样的行为会减少。
The females did this less when they were with a male rat that had grown up in a female-biased litter.
这项新研究是用老鼠来进行的，发现雌老鼠对一种重要的应激激素，即使低水平也比雄老鼠更为敏感；也就是说，相对来说，雌老鼠不能够适应这种激素的高水平。
The new study, done on rats, finds females are more sensitive to low levels of an important stress hormone and less able to adapt to high levels of it than males.
这说明雄猴用自己的尿洗身是为了向雌猴传达单身信号，并展现自己的吸引力。
That suggests males wash with their urine to signal their availability and attractiveness to females.
作者给出了两种理论：或许雄鼠之所以对雌鼠不感兴趣是因为它们本身已经很像雌鼠了？
The authors offer a couple of theories.Maybe boy rats are less interested in girl rats because they are already familiar with girls?
作者给出了两种理论：或许雄鼠之所以对雌鼠不感兴趣是因为它们本身已经很像雌鼠了？
The authors offer a couple of theories. Maybe boy rats are less interested in girl rats because they are already familiar with girls?
这些发现说明，雌蛙可以以雄蛙的鸣叫技术为标准，很快地选择配偶。
These findings suggest that female frogs are forced to choose their mates, based on their vocal skills, very quickly.
雌蜥蜴掉下去的时候，雄蜥蜴跳下去抓住了她，这太不可思议了。
It was amazing watching one drop and the male dive to catch her.
这些雄鼠可以补偿这一事实：它们对雌鼠吸引力不够。
The males may be compensating for the fact that they're less attractive to females.
雌蛙一般比雄蛙大，但雄蛙颜色更华丽，从深绿到灰土色都有。
Females are generally larger than males, but males are more ornately colored, ranging from dark green to lime-colored.
长臂猿是6%的终生配偶制灵长类之一(图中一只雌猿正在为雄猿梳理)。
Gibbons are among the 6 percent of primates that mate for life (pictured, a female gibbon grooms a male).
一雌一雄结合小于5%，现在没有清晰模式有助于解释这现象。
Less than 5% are monogamous, and there is no clear pattern to help explain why it occasionally appears.
雄蚊和雌蚊都是以植物汁液和其他甜食为食。
Male and female mosquitoes alike get their nourishment from plant nectar and other sugar sources.
狼的父母仅仅是被认作雌狼，雄狼或者是一对狼。
Wolf parents used to be referred to as the alpha male and alpha female or the alpha pair.
老鼠在遇到自己的潜在伴侣时会抽动鼻子，雄孔雀在遇到心仪的雌孔雀时会开屏，鸽子则会鼓起胸脯使自己看起来很健壮。
Mice twitch their noses at potential mates, colorful peacocks strut around for admiring peahens, and pigeons puff their chests to look buff.
老鼠在遇到自己的潜在伴侣时会抽动鼻子，雄孔雀在遇到心仪的雌孔雀时会开屏，鸽子则会鼓起胸脯使自己看起来很健壮。
Mice twitch their noses at potential mates, colorful peacocks strut around for admiring peahens, and pigeons puff their chests to look buff.
应用推荐