Source: Centers for Disease Control and Prevention - https://www.cdc.gov/ncbddd/actearly/milestones/index.html
从出生到3岁的发育里程碑
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Title in English: Developmental Milestones From Birth to Age 3
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Title in English: Developmental Milestones From Birth to Age 3
Source: Centers for Disease Control and Prevention - https://www.cdc.gov/ncbddd/actearly/milestones/index.html