“设防”的拼音

“设防”的英语可以翻译为：set up defences，fortify，garrison ...

由四英里长的城墙围着的设防城镇a fortress town enclosed by four miles of ramparts对来自空中的攻击是无法设防的.There can be no real defence against attacks from the air.他们不能让这座城市不设防.They could not leave the city unguarded....