- 问题详情:Yourweighthasbeenimportantsincethemomentyouwereborn.Maybeyouevenknowwhatyourbirthweightwas.Mostnewbornsweighbetween6and9 pounds,butsomemayweighmoreandsomeless.Butveryquickly,ababygainsweightandeveryoneisgladaboutthatbecauseitmeansthechildisg...
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