The place with the highest median family income is the Washington, D.C., metro area, which includes the nation's capital, as well as wealthy suburbs in Virginia and Maryland.
荣登家庭年收入中值最高位置的是华盛顿特区，这个都市区包括华盛顿以及弗吉尼亚州和马里兰州富饶的郊县。
2
The gap led to the inability of most Americans earning the average income to purchase a median priced home in their area.
增长差距导致大多数获取平均收入的美国人在居住地买不起中等售价的房屋。
3
The yellow outline shows the median sea ice extent observed by satellite sensors in September and March from 1979-2000. "extent" is the total area with an ice concentration of at least 15 percent.