万里长城为了抵御入侵而建造，分了几个段落，经历了几个世纪才建成。

Built to ward off invaders, the Great Wall of China was constructed in sections over several centuries.

youdao

万里长城为了抵御入侵而建造，分了几个段落，经历了几个世纪才建成。

Built to ward off invaders, the Great Wall of China was constructed in sections over several centuries.

youdao