幼鲸长出一层厚脂肪以抵御冰冷的海水。
The baby whale develops a thick layer of blubber to protect it from the cold sea.
让不同的幼袋鼠处于不同的发展阶段，有利于母袋鼠同时照顾它们。
To put different young kangaroos at various stages of development is advantageous for the female kangaroo to handle them at the same time.
西红柿、辣椒、茄子、秋葵以及这一科的其他植物在温度超过32摄氏度时，花蕾和幼果会掉落。
Tomatoes, peppers, eggplants, okra, and other plants in this family can drop flower buds and young fruits when the temperature exceeds 32 degrees Celsius.
EPIC 花费资金购买了价值250万美元的幼野牛，这些幼野牛将按照草饲协议饲养，购买价格有保障。
EPIC fronted the money for the purchase of $2.5 million worth of young bison that will be raised according to its grass-fed protocols, with a guaranteed purchase price.
只有当母老虎在保护自己的幼崽时，或者当公虎在保护母老虎不受其他雄性动物的注意时，它们才会殊死搏斗。
Tigers fight to death only when a tigress is defending her young, or when a tiger is guarding a tigress from the attentions of other males.
玩耍可以让一只小动物探索环境并在相对安全的环境中练习技能，因为周围的成年动物通常不期望幼崽应对威胁或捕食者。
Play allows a young animal to explore its environment and practice skill in comparative safety since the surrounding adults generally do not expect the young to deal with threats or predators.
蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
这只母狮还在给它的幼崽喂奶。
幼崽们吃完后，饲养员问：“你们愿意帮忙喂成年松鼠吗？”
After the babies finished eating, the keeper asked, "Would you like to help feed the adult squirrels, too?"
相比之下，当幼龙虾在没有牡蛎片的光滑鱼缸中饲养时，大多数都发育出了两个刀爪。
In contrast, when juvenile lobsters were reared in a smooth tank without the oyster chips, the majority developed two cutter claws.
动物们排斥一窝中最弱小的幼仔。
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.
她载着其中一批幼崽，而其它的在等她回来。
While she is taking one load of hatchlings, the others wait for her to come back.
“如果我有一只乌鸦或狐狸幼崽，我就可以和它玩。”玛丽说。
"If I had a raven or a fox cub I could play with it," said Mary.
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.
这有力地表明，幼鸡的右脑在学习这些行为方面只有很小的作用，或几乎没有发挥作用。
That strongly suggested that the right side of the chick's brain played little or no role in the learning of such behaviours.
黑熊幼崽用树来防御，而经常生活在没有树的环境中的棕熊和北极熊则依靠攻击性来保护它们的幼崽。
Black bear cubs use trees for defense, whereas brown bears and polar bears, which regularly inhabit treeless environments, rely on aggression to protect their cubs.
另一件事是，如果幼崽和家族其他成员分开，一旦其他成员离得足够远，幼崽的生存本能就开始发挥作用。
Another thing would be, if a hatchling gets separated from the rest of its family, once the others get far enough away, its survival instinct kicks in.
在佛罗里达海湾沿岸被工业污染的水域中，海豚幼崽异常高的死亡率可能是被它们母亲的乳汁毒害的结果。
The unusually high mortality rate among dolphin calves in the industrially contaminated waters along Florida's Gulf Coast is probably the result of their being poisoned by their mother's milk.
特别是，龙虾幼虫需要更短的时间才能长到不再容易受到幼鳕鱼捕食的大小，幼鳕鱼是它们生存的主要威胁。
In particular, lobster larvae take less time to reach the size at which they are no longer vulnerable to predation by young cod, the chief threat to their survival.
这就意味着，以这片水域中的鱼类和磷虾为食的帝企鹅，必须去到更远的地方觅食，而饥饿的幼崽则需要等待更长的时间。
This means that king penguins, which feed on fish and krill in this body of water, have to travel further to their feeding grounds, leaving their hungry chicks for longer.
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.
小时候，我的父母就告诉我要尊老爱幼。
From a very young age, my parents told me to respect the old and care for the young.
渐渐地，幼蝉长大成年了。
最初几天，凯南总是对幼崽不在身边感到有些失望。
For the first few days, Kynan was always a bit disappointed that the cubs weren't there.
这些是幼崽。
它们耐心地在水面下照顾幼鲸，等待哺乳期的母鲸回来。
They patiently take care of the young whales just under the surface of the water, waiting for the feeding mothers to return.
有时大象会攻击人类，特别是当它在保护幼崽或受伤时。
Sometimes an elephant will attack human beings, particularly if it is defending its young or it has been wounded.
然而，当它们潜水觅食时，它们的幼崽可能无法跟上父母。
While they are diving for food, however, their young may be unable to follow their parents.
负责繁育计划的林姆尼港保护区迎来了一只稀有的黑犀牛幼崽。
Port Lympne Reserve, which runs a breeding programme, has welcomed the arrival of a rare black rhino calf.
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