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duo bao tai xian xiang jie mi
Author(s): 
Pages: 44-45
Year: Issue:  2
Journal: Knowledge is Power

Abstract: 如今,双胞胎已成家常便饭,三胞胎、五胞胎也不新鲜,七胞胎、八胞胎也时有所闻……那么,多胞胎为何越来越多?多胞胎现象到底是福还是祸呢?
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