And, you know, for me personally, just, income changed.

而且，你知道，对我个人来说，只是收入改变了。

The ordinary demand curve for a particular commodity is drawn on some assumption as to the incomes of members of the public, and has to be re-drawn if the incomes change.

特定商品的普通需求曲线是根据公众成员收入的一些假设绘制的，如果收入发生变化，则必须重新绘制。