fortified border

• 设防的边界

fortified border的用法和样例：

例句

1. The victors seized the fortified cities of Egypt and plundered the land.
   于是埃及国设防的各城全都陷落了，财产被抢掠一空。
2. And last September government unveiled a high-tech, gun-toting sentry robot that could support troops along the heavily fortified border with North Korea.
   去年九月，韩国政府推出了一款持枪的高科技哨兵机器人，这种机器人可为重兵设防的韩朝边界提供兵力支持。