moat|moats

古老的城墙外有一条深深的护城河，里面曾经蓄满了水。

There was a deep ___moat outside the ancient city wall, which was once filled with water.

这座古城四周环绕着深深的护城河，有效地阻挡了敌人的进攻。

The ancient city was surrounded by deep ___moats to effectively block enemy attacks.

我们在一个长满棕榈树的小护城河附近钓鱼。

We went fishing near a small ___moat covered with palm trees.