结果雄性老鼠的疼痛阈值下降而雌性老鼠上升。
The pain threshold dropped in the male rats and rose in the female rats.
雄猴在卡车和球上花了很多时间，而雌性则用更多时间玩布娃娃。
Male monkeys spent more time with the trucks and balls. Females played for longer with the dolls.
北美洲的蛾子，雄性为灰色翅膀而雌性无翅膀；幼虫为秋天的尺蠖。
North American moth with gray-winged males and wingless females; larvae are fall cankerworms.
它们懒的出了名，总是躺在阴凉处，常常忽视幼仔，而雌性却会冒着生命危险去猎食。
Notorious loungers, they'll lie in the shade, often ignoring their cubs, while the females risk life and limb on the hunt.
这就使我们可以自信的得出这一结论：雄性翼龙拥有头冠和较小的尾部，而雌性翼龙则与之相反。
We're very confident now that we're dealing with two genders here - males with big crests and small hips, and females with no crest on the skull and large hips.
喙的颜色可以用来区分翠鸟的性别：雄性的喙大部分是黑色，而雌性的下颌是橙色的，正好同它的脚相配。
Beak color gives away a kingfisher's gender: males show mostly black, while females have an orange lower mandible that matches their feet.
奚说研究员只是放了不咬人的雄性蚊子，而雌性蚊子产的卵与感染了沃尔·巴克氏细菌的雄性蚊子配对后会造成不育，造成蚊子数量大幅减少。
Xi said the researchers only release male mosquitoes, which don't bite. The eggs produced by females mating with Wolbachia-infected males are infertile, which leads to reduced mosquito populations.
约一亿六千万年前，一只雌性翼龙隐翅膀受伤而坠落，葬身水底。
About 160 million years ago, a female pterosaur with an injured wing dropped from the sky into a watery grave.
有对啮齿类动物的研究证明，雌性身体里的细胞可以比雄性进行更好的自我修复，而手术切除卵巢可消除这种差异。
There is evidence from studies in rodents that cells in a female body do repair damage better than in the body of a male and that surgical removal of the ovaries eliminates this difference.
有时候，雌性幼狮会成为其兄弟幼狮的牺牲品被养殖人员淘汰，因为狩猎者会因为雄狮漂亮的鬃毛而更喜欢猎杀雄狮。
Sometimes female cubs are culled at the expense of their male siblings, as hunters prefer to kill males because of their impressive manes.
一般而言，我们能在上游水系找到雌性鳗鱼，而雄性鳗鱼则呆在河口。
In general, female eels are found upstream in river systems, while males stay in the estuaries.
它们以跳跃能力和雌性通过育儿袋来承载幼崽而闻名，并且是澳大利亚的国家象征。
Well-known for their leaping abilities and the female pouch for carrying young (marsupium), kangaroos are a nationally recognized icon of Australia.
雌性草海龙一次大约能产卵250枚，而照看这些卵的任务却由雄性承担。
The female produce 250 eggs at a time and the male looks after them.
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.
像孔雀鱼一样，雄性蟋蟀也要争夺雌性的青睐，虽然他们使用的是音乐大师般地动听啁啾，而不是视觉盛宴。
Like guppies, male crickets compete for female favour-though by virtuoso chirping, rather than visual displays.
第一次发现这种疾病是去年在一头雄性东北虎身上，人们认为Galya和其他两只雌性东北虎是因为接触它而感染的。
The disease was first observed in a male tiger last year. Galya and two other female tigers believed to have carried the disease had been in contact with the male.
约一亿六千万年前一只雌性翼龙隐翅膀受伤而坠落，葬身水底。
About 160 million years ago a female pterosaur with an injured wing dropped from the sky into a watery grave.
而缺少雌激素受体的雌性老鼠生来指爪就更长，那些没有雄激素老鼠的指爪则更短，并且非常女性化。
Female mice that lacked an estrogen receptor were born with longer digits, and those that did not have testosterone had shorter, superfeminine digits.
这条鳗鱼可能是雌性。在它顺流而下游向大西洋时，一名渔民从圣劳伦斯河中把她拖了上来。
A fisherman pulled this eel, likely a female, from the St. Lawrence River as she slipped downstream toward the Atlantic Ocean.
儿子和女儿都可以从种群中离开，而不是像黑猩猩那样只有雌性离开。
Both sons and daughters could disperse from the home group, unlike chimp society, where only females can disperse.
大部分雌性河豚多为灰色，而雄性多为粉丝。马丁和达·席尔瓦认为那是瘢痕组织。
The females are mostly gray; the males' pink color, Martin and da Silva believe, is scar tissue.
你的激素正充分发挥效力，你的情绪会随着雌性激素和黄体酮含量猛涨的或降低到正常水平而上下起伏。
Your hormones are in full force and your moods will ebb and flow like the tides as levels of estrogen and progesterone skyrocket and then drop in regular cycles.
但是由于研究显示，这种疗法更易导致癌症，心血管疾病等的发生，不少女性不得不停止治疗，所以新的研究目标在于单独使用睾酮，而不再结合雌性激素的疗法。
Many women have stopped the combination therapy because of studies linking it to cancer, cardiovascular and other risks, so the new study looked at women given testosterone without estrogen.
但是黑猩猩经常会为领土而战，雌性黑猩猩经常在她们产第一个孩子的时候就离开了原来的群体。
But the chimpanzees have territorial fights, and females typically leave their native group before having their first babies.
呈现出的高度亲代抚育也不同寻常，而最特殊的一点是求偶中雌性接近雄性而不是相反。
It is also unusual for exhibiting a high degree of parental care, while it is unique in that it is the female that approaches the male to mate, not the other way around.
雌性和他们的年轻人住在兽群，而雄性往往被孤立。
Females and their young live in herds, while males tend to be solitary.
更令人惊讶的是，这种学名Leiolepisngovantrii的爬行类动物十分与众不同。其性别全部为雌性，而繁殖手段竟然是克隆！
What's more, the newfound Leiolepis ngovantrii is no run-of-the-mill reptile—the all-female species reproduces via cloning, without the need for male lizards.
这种寄生虫需要两个宿主来完成它的生活史：雌性按蚊和一种脊椎动物，而疟原虫可以侵入到脊椎动物的血流中然后破坏红细胞。
The parasite needs two hosts to complete its life-cycle: female Anopholes mosquitoes, and the bloodstream of a vertebrate where it invades and damages red blood cells.
在哺乳动物中，每一个雌性细胞有两条X染色体，而每一个雄性细胞有一条X染色体。
In mammals, every cell in females has two X-chromosomes, while every cell in males has a single X-chromosome.
做好准备清理雌性几个小时重复不断的挖掘而弄到地板上的脏东西。
Be prepared to clean up a lot of dirt as the female spends hours digging it out repeatedly onto the floor!
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