Soldiers in ancient Greece used polished shields to send battle orders to each other over vast distances in the form of flashes of sunlight.
古希腊士兵用擦得锃亮的盾牌，通过反射太阳光，相互之间长距离传送作战命令。
S old iers in ancient Greece used polished shields to send battle orders to each other over vast distances in the form of flashes of sunlight.
早在古希腊，相距较远的士兵通过利用抛光的盾牌来产生闪光信号传达作战命令。
He would soon learn to understand the few orders, and the language that be used in a battle would not matter.
他很快就能学懂为数不多的几个命令，至于他在战斗中说什么语言则是无关紧要的。
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