这是一颗乳牙。
If it is a lower baby tooth, throw it up onto the roof;
在日本，如果掉的是下牙，就扔到房顶上去；
The baby had put on five pounds and had cut his first tooth.
这个孩子已经长了五磅体重，还长了第一颗牙齿。
The baby is out of sorts today. Perhaps he is cutting a tooth.
阿谁婴儿本日不太舒服，他大概正在长牙。
AIM: to study the risk factors of baby bottle tooth decay (BBTD).
目的：探讨引起婴幼儿猛性龋的危险因素。
AIM: to study the risk factors of baby bottle tooth decay (BBTD).
目的：探讨引起婴幼儿猛性龋的危险因素。
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