库布其沙漠宛如白色的哈达，从西向东迤逦绵延，形成一束四百公里长的弓弦。
B-Location I-Location I-Location I-Location I-Location O O O O O B-Thing I-Thing O O O O O O O O O O O O B-Metric I-Metric I-Metric I-Metric I-Metric I-Metric O O B-Thing I-Thing O