“护城河”造句

城堡有一条很深的流入湖里的护城河.
The castle had a deep moat which emptied into the lake.

这座中世纪的城市周围建有城墙和护城河.
The medieval town a high wall and a deep moat.

我们城市周围的护城河最近被严重污染了.
Moat The moat around our city has been seriously polluted recently.