In low-income countries, diets consist primarily of starches, such as rice, and legumes, like peas, that contain very little protein. So even a child with a full belly does not necessarily get the right balance of nutritious food and vitamins required for healthy physical development.
低收入国家的饮食主要由淀粉类（如稻米）和豆类（如豌豆）食品组成，这类食品蛋白质含量很低。因此，即使儿童能够吃饱，也难以得到营养食品的正确平衡和健康发育所需要的维生素。