【導(dǎo)讀】walkmillionsof. theGreatWall. morethannearto. kilometrethousand. kilometre. walk. millionsof. theGreatWall. morethan. nearto. thousand. 走路。數(shù)百萬。長城。更多的。在...附近。千。千米。classroom. 7metreslong. 30centimetreslong. desk. Changsha3,000yearsold. PoZiStreet(街). morethan500metres. 960metres(米)long. 8yearsold3,000yearsold. 30centimetreslong