尽管缺乏建造材料，巧妙的中国工程师找到了解决办法。

Despite a lack of building materials, ingenious Chinese engineers found a solution.

youdao

尽管缺乏建造材料，巧妙的中国工程师找到了解决办法。

Despite a lack of building materials, ingenious Chinese engineers found a solution.

youdao