1·The area the enemy had inundated as part of their defences.
敌人作为防御工事的一部分而淹没的地区。
2·When it was finished, yet a third ring of defences was built, slightly narrower than the one before, so that from faraway the island resembled an enormous wedding cake.
然而当它完工时,又建了第三圈防御工事,比前一个稍微狭小些,所以从远处看,这个岛象一个巨大的婚礼蛋糕。
3·All the beaches now bristled with defences of various kinds.
所有的海滩现在都布满了各式各样的防御工事。
4·Our army brushed aside the enemy defences and advanced south.
我军扫除了敌人的防御工事向南推进。
5·The defences of the city are strong.
城市的防御工事很稳固。