她根据卵的大小、形状和存活的可能性将它们分成若干组。
She separates the eggs into groups based on their size, shape and possibility of survival.
项目通常首先从确定一条让鲑鱼产过卵的河流开始。
Projects usually begin by identifying a stream that once allowed salmon to spawn.
在锥实螺的例子中，研究表明右旋基因是在卵的形成期表达的。
In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during egg formation.
在滞育期间，小袋鼠呆在雌袋鼠的育儿袋里，因而推迟了子宫内第二个受精卵的发育。
During diapause, a young kangaroo stays in the female's pouch and growth of a second fertilized egg inside the uterus is delayed.
然而，缺乏情况表明卵的大小——每一个繁殖周期下的蛋的数量——远低于产蛋的潜在限制。
Lack, however, suggested that clutch size—the number of eggs a bird lays per breeding cycle—is far below the potential limit of egg production.
在许多动物中，以及在诸如果蝇卵的孵化乃至松鼠跑动的转轮这样的生物活动中，这种变化趋势一直受到广泛的研究。
This drift has been studied extensively in many animals and in biological activities ranging from the hatching of fruit fly eggs to wheel running by squirrels.
斑马蝴蝶卵的桔色调也许是警告捕食者：“你敢吃我。”
The orange hue of this zebra longwing butterfly egg may warn predators: "Eat me if you dare.
疟疾不是由雄性蚊子传播的，只有怀卵的雌性蚊子才会吸食人的血液。
Malaria isn't transmitted by male mosquitoes; only pregnant females bite people for their blood.
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.
比如，我们观察过进食这些蝽卵的蟑螂，还有蜘蛛蟾蜍之类，有些鸟也吃。
We have observed things like praying mantis just feasting on them, some spiders, toads. Some birds do eat them.
这些是重要的农业害虫，且常以难以确认的幼虫和卵的方式出没于乡间的水果上。
These are important agricultural pests and often arrive in the country as hard-to-identify larvae, or eggs, on fruit.
研究表明：在受感染的雌性沃尔·巴克氏体中卵的总数量高出在未受感染的果蝇中观察到的3.5倍。
"The total number of eggs laid per Wolbachia-infected female was 3.5 times higher than that observed in non-infected flies," says the study.
不可避免的结论是，渔民们正在逐渐把特拉华湾的马蹄蟹斩尽杀绝，造成可以养活水鸟的蟹卵的减少。
The inescapable conclusion is that fishers were depleting Delaware Bay's horseshoe crab population, causing a reduction in the number of horseshoe crab eggs upon which the shorebirds feed.
家庭是社会历史最小的单位之一，这意味着盛装我们基因之卵的篮子更少，我们当然会守护得更加热切。
Families are among the smallest in history, which means our genetic eggs are in fewer baskets and we guard them all the more zealously.
这样，那些没有被寄生蜂寄食的虫卵的幼虫在孵化出来后，会食用自己卵的剩余部分，也吃下了那些致命的病毒。
After hatching, any pest larvae that have not been parasitised feed on the remains of their eggs and ingest the lethal virus.
Hauser说，有证据表明，六氯苯对一种叫黄体酮的激素有抑制作用，这种激素对卵的植入有很重要的作用。
Hauser said there is evidence that HCB suppresses a hormone called luteal progesterone, which is important for egg implantation.
伍德乐夫说，这项发现能使研究员们了解营养细胞（颗粒细胞），也就是支撑和环绕逐渐成熟的卵的细胞，如何与卵细胞联系。
The discovery, Woodruff said, will enable researchers to understand how nurse cells (granulosa cells), the cells that support and surround the maturing egg, communicate with the egg.
非同卵双生胎是两个受精卵同时在子宫着床的结果。
Non-identical twins are the result of two fertilized eggs implanting in the uterus at the same time.
两天后他们把受精卵移植回我的体内。
Two days later, they implanted the fertilized eggs back inside me.
雌性的卵在沙漠表面下孵化。
如果昆虫注意到这样的广告，这可能会促使它们将卵产在一个更迟钝、据推测更不会抵抗的寄主上。
If insects paid attention to such advertisements, they might be prompted to lay their eggs on a duller, and presumably less resistant host.
为了保证卵能得到一个温暖的迎接，她把育儿袋叼在嘴上，然后面向天空中太阳的方向。
To ensure the eggs receive a warm welcome she carries the egg pouch in her mouth presenting it to the sky following the sun.
蜘蛛宝宝是由卵变成的。
然而，到了第12天，当它们长到3厘米长时，就会有成百上千微小的卵在雌蛙的身体下部形成。
By the twelfth day, however, when they are about 3 centimetre long, hundreds of tiny eggs form on the underbodies of the females.
他们研究了像吉姆·施普林格和吉姆·路易斯一样在不同环境中长大的同卵双胞胎。
They study pairs of identical twins who grew up in different surroundings, like Jim Springer and Jim Louis.
50公斤重的大马哈鱼王曾经奋力爬上瀑布，把卵产在砾石床上，现在只有混凝土墙挡住静止的水和深深的泥床。
Where 50-kilogram king salmon once fought their way up waterfalls to lay their eggs in gravel beds, there now are only concrete walls holding back still water and deep beds of muddy deposits.
科学家们继续研究同卵双胞胎，因为还有不确定的地方和许多问题没解决。
Scientists continue to study identical twins because they are uncertain about them and have many questions.
如果第二年有足够的雨水形成另一个湖泊，卵就会孵化，小虾会再次快速地经历生长、成年、产卵和死亡的循环。
If sufficient rain falls the next year to form another lake, the eggs hatch, and once again the shrimps pass rapidly through their cycle of growth, adulthood, egg-laying, and death.
外层几乎是密封的，可以保护脆弱的蜂卵，以及后来的幼虫。
The casing is nearly airtight, which helps protect the vulnerable egg and later larva.
外层几乎是密封的，可以保护脆弱的蜂卵，以及后来的幼虫。
The casing is nearly airtight, which helps protect the vulnerable egg and later larva.
应用推荐