鸭子是在有大量水的地方觅食和繁殖的鸟类，但近几十年来，由于干旱，它们的栖息地一直在缩小。
Ducks are birds that feed and breed in areas where there is a lot of water, but their habitats have been shrinking in recent decades because of the droughts.
人们曾经认为，蚂蚁培育的真菌是它们繁殖的一种单一品种，自远古时期以来基本上没有改变。
It was once thought that the fungus that ants cultivate was a single type that they had propagated, essentially unchanged from the distant past.
她当时进行的研究是月亮周期对蟾蜍习性与繁殖的影响。
She was studying the effects of lunar cycles on the toads'behaviour and reproduction.
实验室研究证实绿茶含有一种可抑制病毒繁殖的化合物。
Laboratory studies have identified a compound in green tea that might keep viruses from multiplying.
另一种常见错误就是为对尘螨过敏的孩子购买加湿器；孰不知加湿器是尘螨最易于繁殖的地方。
Another was using a humidifier for a child who was allergic to dust mites; a humidifier tends to be a place where dust mites like to breed.
生物钟控制动物吃东西、睡眠及繁殖的时间：生物钟有助于动物适应四季的变化，这一点极其重要。
This clock governs when an animal eats, sleeps and reproduces: it is hard to overstate how important it is at helping animals adapt to changing conditions throughout the seasons.
能量储备很重要，但是这些储备的能量最终都将被用于维持生命、繁殖或生长。
Storage is important, but ultimately that energy will be used for maintenance, reproduction, or growth.
鸟并不自由，它们有工作要做，它们要吃，繁殖，飞翔，还要唱歌，这就是他们的工作。
Birds aren't free. They have work to do - eat, breed, fly, sing - and they do it.
然而，要使这些家庭储水器没有蚊子繁殖，只需采取简单措施：将储存的饮用水覆盖，使蚊子不能在那里产卵。
Yet, keeping these household water collections free from mosquito breeding only requires simple measures: storing drinking water under cover so that mosquitoes cannot deposit their eggs.
据苏格兰皇家鸟类保护协会所述，今年苏格兰海鸟繁殖是近10年来最富有成效的一年。
Seabirds breeding in Scotland have had their most productive year for almost a decade, according to the RSPB Scotland.
成功繁殖需要安宁的环境，干扰越少越好。
Successful breeding requires quiet, peaceful conditions with as little disturbance as possible.
青蛙通常在任何适宜的水塘里繁殖。
这些生物往往体型较大、寿命较长，并且每年在繁殖上花费的精力相对较少。
These organisms tend to have big bodies, are long-lived, and spend relatively little effort each year on reproduction.
这些寿命极短的植物大量繁殖；也就是说，它们在母株周围持续提供着“种子雨”。
These very short-lived plants reproduce prolifically; that is to say they provide a constant rain of seed in the neighborhood of parent plants.
进食、求偶、繁殖，甚至“休息”，都是在不断运动中进行的。
Feeding, courtship, reproduction, and even "rest" are carried out while in constant motion.
微繁殖被用于优良品系或无病害种植材料的大规模无性繁殖。
Micropropagation is used for the mass clonal propagation of elite lines or disease-free planting material.
首批4只大熊猫预计5月1日入住位于长沙的国内第5个大熊猫繁殖基地。
Four giant pandas are expected to arrive in Changsha on May 1 as the first inhabitants of China's 5th giant panda breeding base.
因为好斗的个体更有可能生存和繁殖，所以任何与好斗行为相关的基因都更有可能遗传给后代。
Because aggressive individuals are more likely to survive and reproduce, whatever genes are linked to aggressive behavior are more likely to be transmitted to subsequent generations.
至于鳟鱼，布莱德利博士说，他的鱼在自行繁殖方面已经遇到了足够多的麻烦，因此它们不太可能在野外生存得很好。
As for the trout, Dr. Bradley says his fish have enough trouble breeding on their own for it to be unlikely that they would do well in the wild.
我们再也不能考虑通过在学校饮水器里添加抗生素来保护孩子们的健康，因为我们知道这样会导致抗药性细菌的繁殖。
We would never think of trying to keep our children healthy by adding antibiotics to school water fountains, because we know this would breed antibiotic-resistant bacteria.
它的繁殖地现在得到了更好的保护。
在一些物种中，祖父母也在自己的繁殖期结束后帮助自己的后代养育子女。
In some species, grandparents also assist their offspring when their own breeding time is over.
它们的旅行会把它们带到安全而丰裕的繁殖地。
Their travel would take them to safe and bountiful breeding grounds.
不管结果如何，人类复杂的繁殖过程总是让人惊叹不已。更奇妙的是，这种无比复杂的过程还总能结出硕果。
Whatever the ultimate outcome, it never ceases to amaze me how complicated human reproduction is - and that it often actually works!
不管结果如何，人类复杂的繁殖过程总是让人惊叹不已。更奇妙的是，这种无比复杂的过程还总能结出硕果。
Whatever the ultimate outcome, it never ceases to amaze me how complicated human reproduction is - and that it often actually works!
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