头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。Overhead, the chopper roared and the big blades churned the air.在南大街上，一座巨大的砖砌建筑赫然出现在人们的视线中。On South Main Street, a huge brick building looms into view.乳牛的喂养方法发生了巨大的改变。The feeding of dairy cows ha...
What personnal possessions do you cary with you at all times?你有什么一直携带的私人物品 吗 ?Statistic Analysis ( SAS , SAS institute, Cary, NC, USA ) was used.所用统计软件为statist1CAnalysissystem第6版(SASInsititute, Cary, NC, USA ) .Cary Gran...