If a soldier sees his friend blown up, his brain goes into such high alarm that he can't actually put the experience into words, so he just feels the horror over and over again.
如果一个士兵看到他的朋友被炸了 他的大脑会进入 高度警戒状态以致他无法把所经历的东西用语言表达出来 他只是一次又一次地感受到恐惧