Because milk is rich in the amino acid tryptophan, it can sometimes aid in deep sleep.

因为牛奶富含色氨酸，在一些情况下它有助于你进入深度睡眠。

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Another snooze snack is a warm cup of milk; because milk is rich in the amino acid tryptophan, it can sometimes aid in deep sleep.

另一个会让你犯困的饮料就是一杯温牛奶；因为牛奶富含色氨酸，在一些情况下它有助于你进入深度睡眠。

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Before silos were invented, cows gave less milk during winter because they had no green grass to eat.

筒仓发明之前，因为没有青草可以吃，奶牛在冬天产奶量减少。

《柯林斯英汉双解大词典》

Astronomers have always thought that the Andromeda Galaxy was more massive than the Milk Way because it is believed to have more stars.

VOA: special.2009.01.20

You're taking advantage of a promoter system, or a gene activation system, that this species knows about because adult animals can make milk.

我们之所以能利用这个启动子系统,或者称之为可以被这一物种识别的,基因活化系统,是因为成年动物可以泌乳

耶鲁公开课 - 生物医学工程探索课程节选

It also turns out that they're made stable in these environments like milk and mucus secretions because of this secretory chain which is wrapped around it.

同时,连接抗体还可以,使抗体在像乳汁或是粘液分泌物,这样的体内环境中保持稳定,因为分泌循环系统可以将抗体包裹在内

耶鲁公开课 - 生物医学工程探索课程节选

Officials have said they excluded high-calorie milk drinks because milk provides nutritional value.

WSJ: City Drinks Plan Questioned

Of course, it's plausible that the culture came first drinking milk gave some advantage to all, because milk has nutrition other than lactose in it, but it especially benefited adults with mutations that allowed lactose digestion.

WSJ: Matt Ridley on Human Culture's Effect on Genes | Mind & Matter

Only 20 weeks old, these sister beasts warrant tight security because their milk is highly prized by the U.S. military.

FORBES: Charlotte's Goat