防线的英文：
defensive line
fortification

参考例句：
  • Secondary defense
    第2防线
  • The enemy had to fall back on the second line of defense.
    敌人不得不退到第二道防线。
  • Zombie Bull launches Zombie Bull Rider deep into your defenses.
    僵尸牛会将牛仔僵尸甩进你的植物防线中。
  • The much-Publicized Siegfried Line was virtually unmanned and without guns
    当初大肆吹嘘的齐格菲防线，实际上已无人也无炮防守。
  • Our line of defense was strongly fortified.
    我们的防线壁垒森严。
  • Smash the enemy's defence
    摧毁敌人的防线
  • The army pierced the enemy's line.
    部队突破了敌人的防线。
  • Pogo Zombie hops to bypass your defenses.
    跳跳僵尸能够跳过防线。
  • Our penetration of the enemy's defences
    我军对敌人防线的突破.
  • The Thai players sharp passes to penetrate China's defence.
    泰国队迅速撕开了中国队的防线。
defensive是什么意思：
adj. 防守的，防御的
n. 防守，防御
  • (in a match) the defense
    守方
  • The defenses of the city must be strengthened.
    这个城市的防御工事必须加强。
  • He was the then secretary of Defense.
    他是当时的国防部长。
line是什么意思：
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行
  • This is a lined trunk.
    这是一个有衬里的箱子。
  • They are politically in line.
    他们在政治上意见一致。
  • On a map there are horizontal lines and vertical lines.
    在地图上有水平的线和垂直的线。
fortification是什么意思：
n. 防御工事,要塞,筑城
  • A minor fortification constructed beyond a main defensive position or fortification.
    简易外围工事在主要防御位置或防御工事之外构筑的小防御工事
  • The process of planning or erecting earth fortifications.
    筑墙计划或树立土制堡垒的过程
  • A ledge between the parapet and the moat in a fortification.
    搁板在堡垒中护城河与护墙之间的搁板

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