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....

2025-09-06