front-line troops

• 前线部队

front-line troops的用法和样例：

例句

1. We must reinforce the troops at the front.
   我们必须加强前线部队的力量。
2. The front army troops were strengthened by a large contingent of students from the military academy.
   前线部队得到了一大批军事学院学员的增援。