视觉训练

摘要：

The squad were having”visual training”. One smart recruit was asked by the officer to count how many men composed a digging party in a distant field. The party was so faraway that the men appeared as mere dots, but unhesitatingly the recruit replied:”Sixteen men and a sergeant, sir.”

在线出版日期：2019-01-12（万方平台首次上网日期，不代表论文的发表时间）

页数：共1页

页码：61