动物们排斥一窝中最弱小的幼仔。
我将送你一只德国牧羊犬幼仔作为圣诞礼物。
宰杀海豹幼仔的行为已引起了环保团体的强烈抗议。
The culling of seal cubs has led to an outcry from environmental groups.
袋鼠幼仔非常可爱。
除去它们的藻类，斑点蝾螈的幼仔孵化得更小更不成熟。
Take away their algae, and spotted salamander babies hatch smaller and less mature.
2000只灰色海豹幼仔每年秋天在那里出生。
蛋大约在十天内孵化，不过，鸭嘴兽的幼仔只有青豆大小，完全无法自立。
The eggs hatch in about ten days, but platypus infants are the size of lima beans and totally helpless.
大象曼弗雷德伸出它的鼻子，轻轻地抱起了幼仔。
Manfred the elephant reached out with his trunk and gently scooped up the baby.
尽管蜥蜴可能对栖息地有要求，它对幼仔的健康却完全漠不关心。
Although the lizard may stake a claim to its habitat, it exerts total indifference toward the well-being of its young.
在一年左右，幼仔会半自立。
图片：1一只黑白相间的白颈狐猴幼仔。
喂养幼仔也更加困难。
在人类的认识中，很少有动物的幼仔能够发出叫声。
Few larvae of any animal species are known to produce sounds.
雌性要抚育它们的幼仔三至四个月，直到小宝宝能够自己游泳。
Females nurse their young for three to four months until the babies can swim on their own.
一位饲养员告诉我必须尽快赶到动物园，因为我们有了一个熊猫幼仔。
A keeper here called and said that I needed to get to the zoo as soon as possible, that we had a panda cub.
不过直到现在，研究者才认识到两栖动物的幼仔可能也会在水下发出声音。
Until now though, researchers did not realise that amphibian larva might also produce sounds underwater.
那些巢穴在墨西哥湾海岸周围的鸟类现在正在无油的海滩上养育它们的幼仔。
Those that nest around the Gulf’s shores are right now raising their chicks on oil-free beaches.
据当地媒体报道，科研人员穿着熊猫服是为确保避免对幼仔环境的人为干扰。
Researchers wear panda costumes to ensure that the cub's environment is devoid of human influence, according to local media.
医院目前共看护着23只红毛猩猩幼仔，它们之前均被母亲遗弃或虐待。
All 23 baby orangutans treated there were rejected or abused by their mothers.
科学家在一块6700万年的化石中发现了一条蛇盘绕在恐龙蛋和一只幼仔周围。
Scientists have found a 67 million-year-old fossil of a snake coiled around dinosaur eggs and a hatchling.
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.
两只熊猫都租借到英国，租期为10年。据悉，它们在此期间产下的幼仔将在出生后不久送回中国。
Both pandas are being lent to Britain for 10 years, although it is expected that any offspring they produce during that period will be returned to China shortly after birth.
然后研究小组确认他们发现了一条蛇盘绕着一颗破碎的恐龙蛋，周围还有一只幼仔和另外两枚蛋。
The team then recognized they had actually found a snake coiled around a broken egg, with a hatchling and two other eggs nearby.
青蛙的蝌蚪能够发出声音这一发现，也提高了许多其他水生动物幼仔以同样方式沟通的可能性。
The discovery that frog tadpoles can make sounds also raises the possibility that a host of aquatic larvae communicate in a similar way.
在一项新研究中，研究者用健康的母鼠抚育压力大的母鼠产下的幼仔，发现表观遗传变化只能部分修复。
In the new study, researchers also had healthy mothers raise the offspring of stressed mothers, and found that the problems were only partially fixed.
大熊猫寻找伴侣时非常挑剔，野生雌性大熊猫每隔两三年生一只幼仔，圈养大熊猫的繁殖率就更低了。
Pandas are notoriously fussy when it comes to finding mates. Females in the wild normally have a cub once every two to three years, and the fertility of captive giant pandas is even lower.
大熊猫寻找伴侣时非常挑剔，野生雌性大熊猫每隔两三年生一只幼仔，圈养大熊猫的繁殖率就更低了。
Pandas are notoriously fussy when it comes to finding mates. Females in the wild normally have a cub once every two to three years, and the fertility of captive giant pandas is even lower.
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