They are the hidden homeless. And their ranks appear to be growing as rising joblessness and mortgage foreclosures take their toll in Sacramento and other U.S. cities, experts say.

• 专家指出，他们原是隐性无家游民，但随著失业率攀升和房屋被银行查封法拍，重创沙加缅度等美国城市的经济后，他们人数似乎与日俱增。