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.
他们保护幼者。
它们把幼崽留在家中，直到它们身体足够健壮，能够独立生存。
They keep their young at home until they are physically able to survive on their own.
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.
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?"
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。
2000只灰色海豹幼仔每年秋天在那里出生。
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。
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.
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.
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.
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.
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.
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.
他还清楚地记得，他的第一个家庭作业是画一幅叫《老与幼》的画。
He still remembered clearly that his first homework was to paint a picture called Old and Young.
幼瓢虫就是园丁们最大的朋友之一，它们是凶猛的食肉动物，专门对付白粉虱和红蜘蛛螨。
ladybird larvae are among the biggest friends we gardeners have. They're ferocious predators on problem whitefly and red spider mite.
来自悉尼南部的这个幼袋鼠出生时只有一颗软芯糖豆儿那么大，在它丽丽妈妈的育儿袋里呆六个月。
The joey, from just south of Sydney, was born the size of a jellybean and spent six months inside his mother, Lily's pouch.
他像往常一样给点点喂了一些新鲜的嫩芽和树叶当早餐。过了一会儿，他回来时，发现点点身旁有一只刚出生的麋鹿幼崽。
He fed Diandian some fresh shoots and leaves for breakfast as usual, and moments later when he returned, a newborn milu was right beside her.
尊老爱幼是良好的道德风尚。
To respect the old and to love the young are good moral habits.
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