...前::真性性早熟和先天性肾上腺 真性性早熟和先天性肾上腺 皮质增生症 皮质增生症 80 81 一生中两副牙齿 乳牙（milk teeth）是生后头二年长 出的临时牙齿，共20个 出牙时间：4-10月，12个月未出牙视 为乳牙萌出延迟 出齐时间：2.5岁 82 2岁内出牙...
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以上来源于: WordNet
N-COUNT Your milk teeth are the first teeth that grow in your mouth, which later fall out and are replaced by a second set. 奶牙; 乳牙 [usu pl]
One of the second set of teeth in mammals that grow as the milk teeth are shed. Human beings have 32 permanent teeth.
哺乳动物的第二套牙齿之一，它是在乳牙脱落时生长起来的。人类有三十二颗恒牙。
Kits have what are called "milk teeth" until about 7 to 9 weeks old when their permanent canine teeth begin to come in.
小狗刚开始的时候是乳牙，一直到7至9个星期他们的犬牙才会开始生长。
Those milk teeth can be really sharp, I am watching my fingers every time when I try to clean his month, sometime he bites me very hard.
小奶牙真不假，俺最怕帮他清洁口腔，一不小心我也会被他烙上记号，洒泪史一筐。
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