一个人走出家门，沿着贡布茨纳路一直顺着洮河往下走，不知不觉间，已至城郊。
B-Person I-Person I-Person O O B-Location I-Location O O O B-Thing I-Thing I-Thing I-Thing I-Thing O O O O B-Location I-Location O O O O O O O O O O O O B-Location I-Location O