n.(母牛、母山羊)乳房;乳腺
The calf fumbled for its mother's udder for milk. 小牛摸索着妈妈的乳房找奶吃。
A cow's udder hangs loosely between its legs and produces milk. 母牛的乳房垂於腿之间用来产奶。
Dolly was the only lamb born from 277 fusions of oocytes with udder cells. 多利是277组卵母细胞和乳腺细胞的配对中唯一克隆成活的。
n.舵;方向舵;指导原则
n.善于在泥地上跑的马