border defense forces

• 边防部队

border defense forces的用法和样例：

例句

1. The frontier forces had to operate against the invading army.
   边防部队不得不对入侵之敌作战。
2. Being driven beyond the limits of forbearance, Chinese frontier troops fought back in self defense.
   在忍无可忍的情况下，中国边防部队进行了自卫反击。