现在的guideline就是这样,一google就找到了 http://www.babycenter.com/0_how-to-keep-your-baby-safe-in-the-s 因为晒太阳的伤害是累积效应,美国这边太阳又比较厉害,大家还是注意点了 “Keep your baby completely out of the sun as much as possible before 6 months of age. When you do go outdoors, be particularly careful in the early months about taking all the following precautions.”