我们乘坐汽车从曲沃县城出发，不久便进入沁水河谷，沿山间公路缓缓东行。
B-Person I-Person O O B-Thing I-Thing O B-Location I-Location I-Location I-Location O O O B-Time I-Time O O O B-Location I-Location I-Location I-Location O O B-Thing I-Thing I-Thing I-Thing O O O O O