Gerald had little disposable income.

杰拉尔德没有多少可自由支配的收入。

"As people develop their higher levels of disposable income, they want to treat themselves," he said, "They do not want to just buy Tesco Value shower gel.

“随着人们可支配收入层次的提高，他们想要款待自己。”他说：“他们不想仅仅购买乐购品牌的沐浴露。”

Increased disposable income.

可支配收入的增加。

How much disposable income do they have?

他们有多少可支配收入？

They all save about 30 percent of disposable income.

他们都只存大约30%的可支配收入。