应力性骨折的危险因素为吸烟和入伍后跟不上行军速度，OR值分别为1.67和1.70 ；
Smoking and drop behind during marching were risk factors with OR 1.67 and 1.70 respectively.
此时，北军全部七个军团中的六个已经抵达战场，而第六军团以急行军的速度从32英里之外赶过来。
Six of its seven corps had arrived on the battlefield, and VI Corps was making a thirty-six-mile forced march to reach it.
到了中午时分，士兵的衣服都湿透了，行军的速度也慢下来，有几个体弱的士兵竟晕倒在路边。
By noontime the soldiers' clothes were wet through with sweat, and the marching speed slowed down. Some soldiers of weak physique even fainted on the roadside.
应用推荐