单词downwardly mobile
na.: “upwardly/downwardly mobile”的变体
Middle-income blacks are downwardly mobile. Why?
黑人中产阶级正在不断下滑，为什么？
Could it possibly be true that a swath of people in China"s big cities is downwardly mobile, if one compared wages with living expenses?
如果比较一下工资与生活成本，中国大城市的一批人在往下走，难道这种说法会是真实情况？