英语翻译

问题描述:

英语翻译
when the enemy is over the mine the touch of an electric button causes it to spring out of the ground until it is checked by a chain at the height of a yard above the surface,when it explodes,mowing down every man in the vicinity.
请完整翻译整个句子,第一句话好理解:“敌人走到地雷上,触发了电动按钮就会使地雷炸出地面,.地雷爆炸会撂倒每个在附近的敌人”最关键的是until it is checked by a chain at the height of a yard above the surface 这句话如何译呢?

敌人走到地雷上面,会触发(地雷上的)电动按钮,导火索便(点燃发射装药),将(地雷)推起离地约1码(1码 = 0.9144 米)高,然后地雷爆炸,撂倒在附近的所有敌人.until it is checked by a chain这里可以理解为地雷上的...你的解释比较好理解一点,可是chain 后面的定语 a chain at the height of a yard above the surface又怎么理解呢?这里我觉得at the height of a yard above the surface是causes it to spring out of the ground中的it(即mine)的状语。to spring out of the ground是一个状语,指地雷被(装药燃烧产生的推力)推出地面,而at the height of a yard above the surface是另一个状语,指离地一码的高度。