undefended造句

1、It's single undefended spot is its fleshy, armor-less underside.
它唯一没有防备的地方是它没有甲片保护的腹部。

2、The coast was undefended and lay open to attack.
该海岸未设防，易受攻击。

3、Bombs and poison gas would rain down on undefended cities.
* 毒气弹纷纷投向那些没有防御的城市。