warm-blooded vertebrates characterized by mammary glands in the female
例句
用作名词 (n.)
The ice age arrives, the cold climate surpassed the biological survival to allow, the massive ancient times mammalia biology became extinct. 冰河时期来到,寒冷的气候超出了生物生存的容许度,大量古代哺乳类生物绝种。
Milk sugar is obtained from the milk of mammalia, but unlike cane sugar does not ferment. 奶糖来自哺乳动物的奶,但跟蔗糖不同的是它不会发酵。