个位十位百位千位都是计算单位简介：He wanted to leave memories about them and leave old photos in his mind that even though they had faded long into the future, he still felt warm in his heart every time he thought of them.
He wanted to leave memories about them and leave old photos in his mind that even though they had faded long into the future, he still felt warm in his heart every time he thought of them.
