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的汁或精力来照顾两只熊猫幼崽。

When you let milk sit, cream rises to the top.

当你静置汁时，就会浮到最上面来。

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

这意味着它们体温恒温，呼吸空气，它们汁哺育仔兽。

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，它的汁也即将耗尽。

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

不过有些试药员报告说她们听到音乐时会忍不住汁。

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

帕克的汁比人类的奶水浓五倍。

And the hormone prolactin is connected with lactation, which is the production of milk by mammals.

催激素与有关，它是哺动物汁的过程。

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

初生的小熊既瞎又聋但本能使它们摸索着喝到母亲汁。

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

被认为是汁中最美味的部。

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

因此也就不奇怪为什么在血液、尿液、汁以及其它液中会检测出三氯生了。

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

幼蛛在出生后的前 20 天完全依赖于母亲的汁。

Cream is the fat in milk. And we use cream from farm animals to make many tasty foods.

是汁中的肪。我们用产自农场动物们的来制作美味的食品。

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，但就像其他哺动物一样，在婴儿期后仍会停止汁。

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

细胞催素，而催素水平的增高使得腺可以产生汁。

That means that they are covered in fur, they are warm-blooded, and they feed their babies milk.

它们的体温恒定，体表覆有皮毛，并且以汁哺育后代。

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，在营养上与汁相同，例如，通过基因改造的细菌发酵。

Every day, it will drink around 500 liters of fat-rich milk.

每天，它要饮用约500升富含肪的汁。

Her hormones are telling her she had a baby and she's supposed to produce milk.

她的荷尔蒙告诉她她生过宝宝，应该汁。

The koala genome has also revealed genes involved in reproduction and in milk production.

考拉基因组还揭示了与繁殖和汁生产相关的基因。

Their mother's milk contains 60% fat, the fattiest milk in the world.

它们母亲的汁含有60%的肪，是世界上肪含量最高的汁。