胡萝卜可以改善视力吗？
胡萝卜富含维生素a，这是良好视力所必需的营养素。吃胡萝卜会为您提供良好视力所需的维生素a量。因此，食用它可以帮助改善视力。
yes, breast shields are really effective, as they help moms overcome the common breastfeeding challenges like when the baby is having trouble latching, one or both of the mother’s nipples are flat or inverted, or they have a cracked nipple, etc.   
they help provide a definitive shape to mom’s nipple, making it easier for the baby to latch onto.