我几年前去参观了黄河。

Wǒ jǐnián qián qù cānguān le Huánghé.

I visited the Yellow River a few years ago.

黄河拥有悠久历史文化。

Huánghé yōngyǒu yōujiǔ lìshǐ wénhuà.

The Yellow River has long history and culture.

黄河是中国其中一条最长的河流。

Huánghé shì Zhōngguó qízhōng yì tiáo zuì cháng de héliú.

The Yellow River is one of the longest rivers in China.