The model also shows that humans do not differ from other carnivores with respect to timing of weaning .

该模型还显示，人类的断奶时机并不有别于其他的食肉动物。

Spoons are what we give babies -- whether ceremonial silver christening spoons or shallow plastic weaning spoons containing the first gummy mouthfuls of baby rice .

我们给婴儿喂食就爱用勺子无论是洗礼上用的礼仪银汤勺，还是断奶时用的、盛满黏黏婴儿米粉的塑料浅勺。

In most cases mammals stop producing lactase after weaning but a nucleotide switch in their dna can keep lactase flowing into adulthood a trait called lactase persistence .

在大多数情况下，哺乳动物在断奶之后就产生乳糖酶，但是其dna中的一个核糖开关能使成年人也能产生乳糖酶，该特征称为乳糖酶持续性。

Last april , meharg 's group caused a sensation when it reported disturbing levels of arsenic in rice porridge sold in u.k. supermarkets for weaning infants .

去年4月，麦格拉思的实验小组报告：在英国超级市场中出售的断奶婴儿所食用的米粥中砷的含量令人担忧，这一报告引起了轰动。

Further tests showed that this poor myelin production occurred even when mice were isolated for only two weeks after weaning and then returned to a social environment .

进一步的测试也表明，就是断奶后被隔离两周接着回到同伴中去的老鼠脑中的髓磷脂量也非常少。