乳吸い:Sucking breasts

比重0,9以上にすると両乳を吸う確率が上がる。本当は両方から吸ってほしいけどモデルによっても成功率が違う為注意。 If the specific gravity is 0.9 or higher, the chances of the baby sucking both breasts will increase. Ideally, you want the baby to suck from both breasts, but be careful as the success rate varies depending on the model.