你知道吗，那是中国最大的瀑布。

You know, that's the largest water-fall in China.

youdao

有人知道中国的黄河壶口瀑布吗？

Some people know that China's Yellow River Hukou Waterfall it?

youdao

有人知道中国的黄河壶口瀑布吗？

Some people know that China's Yellow River Hukou Waterfall it?

youdao