He was an example of sort of downward mobility.

他是没落的案例。

Quart and the economists who studied these issues say many things have led to lower incomes and downward mobility.

夸特和研究这些问题的经济学家表示，导致收入下降和“向下流动”的原因有很多。

Also, women born at the bottom experience more downward mobility than men, with more women than men having family incomes lower than that of their parents.

此外，出生在底层的女性比男性更容易向下流动，家庭收入低于父母的女性多于男性。