护城河

前几天，我和爸爸、妈妈一起到西安玩儿。

A few days ago, I went to Xi'an to play with my father and mother.

“爸爸，城墙下面怎么有条河？”

"Dad, how can there be a river under the wall?"

“那叫护城河。”爸爸说。

"That's the moat." Dad said.

“为什么有护城河？”

"Why is there a moat?"

“它可以阻挡敌人的进攻。”妈妈说。

"It can stop the enemy's attack." Mom said.

“它是什么朝代修的？”

"What Dynasty was it built?"

“可能是明代的。”爸爸有些不肯定的说。

"Probably in the Ming Dynasty." Dad said with some uncertainty.

“古代人真聪明。”我摸了摸头说。

"The ancients were very clever." I touched my head and said.