frontlinesCOCA⁶²⁴⁸⁷ 基本例句 n.前线frontline的复数形式原型frontline的复数 Rather, they said, volunteer units would be ordered to the frontlines after being trained to support the formal military units already there. 他们说，他们让志愿者团队在接受了训练、知道如何支援已经在前线的正式部队之后，再接受命令上前线。 www.voanews.com.cn