每星期一个孩子相等于一年五十二个。
在场的共有五十二个人，包括婴儿在内。
There were fifty- two persons present, counting in the babies.
方法： 五十二个来自北印度有安氏二类一分类错合畸形的女孩，而同样的生体生长成熟状态的病人也被选出来进行研究。
METHODS: Fifty-five girls from North India with Class II Division 1 malocclusion and the same physical growth maturation status were selected for the study.
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