It's thought that they don't have sufficient milk or energy to care for two.

人们推测是因为它们没有足够乳汁或精力两只熊猫幼崽。

The cream is considered to be the best tasting part of milk.

乳脂被认为是乳汁中最美部分。

That means they are warm blooded, they breathe air, and they feed ther babies milk.

这意着它们体温恒温，呼吸空气，它们分泌乳汁哺育仔兽。

It's six months since she last fed and her milk is starting to run dry.

它已经6个月没有吃东西了，它乳汁也即将耗尽。

Although some test subjects reported lactating uncontrollably when they heard music.

过有些试药员报告说她们听到音乐时会忍住分泌乳汁。

Puck's milk is five times richer than human milk.

帕克乳汁比人类奶水浓五倍。

Better if they had been born in the open pasture and suckled by a wolf, that they might have seen with clearer eyes what field they were called to labor in.

他们还如出生在开阔牧场上，被狼用乳汁养大，这样他们眼睛还可能比较清楚地看到他们是被召唤到了什么样田地上劳作。

It's known as milk sugar because it's only found in nature when it links with glucose to form lactose, a disaccharide found in the milk of mammals, which includes cow and human breast milk.

这是因为半乳糖在自然中以与葡萄糖结合形式存在，它们结合形成一种双糖，即乳糖；牛乳、母乳等哺乳动物乳汁都含有乳糖。

So if a mother breastfeeds that mean that by eating vegetables, her baby will be exposed tothe flavors of vegetables through her breast milk.

因此，如果一个母亲在吃蔬菜同时用母乳喂养孩子，她孩子就会通过乳汁接触到蔬菜。

Only with the foal suckling will the mare let down her milk and then Tungaa has a brief chance to draw some off for the family.

只有给小马喂奶时，母马才会释放乳汁，这时唐加才能乘隙而入，为家里挤点马奶。

They can not only taste the difference between their mother's milk and another mom's, but they can even smell her breasts from clear across the room!

他们仅能尝出母亲乳汁和另一个母亲乳汁之间区别，甚至能从房间另一头闻到妈妈奶！

IgA is the main antibody found in breast milk, tears, saliva, and the mucosal secretions of respiratory tract, gastrointestinal tract, and the genitourinary tract.

IgA是乳汁、泪液、唾液中最多抗体，也是呼吸黏膜、胃肠粘膜、泌尿生殖粘膜最常见抗体。

The milk of the sheep is its food. Some day the lamb will grow to be a sheep, and it will eat grass.

母羊乳汁就是它养料。有一天，小羊羔会长大，那时它就可以吃草了。

As for Mara, she must survive on her reserves of blubber, the same blubber that she turns into milk, for her baby.

至于玛拉，必须靠着体内储存脂肪生存，同样它将体内脂肪变成乳汁，哺育着幼鲸。

Several startups have created non-animal milk that is nutritionally identical to dairy milk, for example, through fermentation by gene modified bacteria.

几家初创公司创造了非动物牛奶，在营养上与乳汁相同，例如，通过基因改造细菌发酵。

That one exception is humans, but like every other mammal, will still hardwired to stop producing lactase after infancy.

人类是个例外，但就像其他哺乳动物一样，在婴儿期后仍会停止分泌乳汁。

These lactotrophs secrete the hormone prolactin, and the increased levels of prolactin prepares the mammary glands to produce milk.

泌乳细胞分泌催乳素，而催乳素水平增高使得乳腺可以产生乳汁。

The tiny spiderlings are completely dependent on their mother's milk for the first 20 days of their life.

幼蛛在出生后前 20 天完全依赖于母亲乳汁。

So it's not too surprising that triclosan also shows up in blood, urine, breast milk and mucus.

因此也就奇怪为什么在血液、尿液、乳汁以及其它分泌液中会检测出三氯生了。

The cubs are born blind and deaf but instinct drives them to find their mother's milk.

初生小熊既瞎又聋但本能使它们摸索着喝到母亲乳汁。