打仗建立防线英语怎么说

"to establish a defensive line for battle"是表达打仗建立防线的英文短语。
其中, "to establish"是 "建立"的意思, "defensive line"是 "防线"的意思, "for battle"是 "为了战斗"的意思.
下面是一些例句:
The army's objective is to establish a defensive line in the mountains before the enemy arrives.
The soldiers were able to establish a defensive line just in time to stop the enemy's advance.
Our strategy is to establish a strong defensive line to protect our country from invaders.
这个短语的来源是来自于军事术语，建立防线是在战斗之前或者战斗之中的重要行动。防线是阻止敌人进攻的一系列战术，通常包括防止敌人进入防线内部，或阻止敌人进入某些区域。