So if you look at what it would cost if every state government invested in universal preschool at age four, full-day preschool at age four, the total annual national cost would be roughly 30 billion dollars.
我们估算了所需要投入的总额 如果各州政府都参与投资 从4岁开始普及幼儿园，全日制幼儿园 每年全国总共的花销大约是 300亿美金