Greeksoldierssentmessagesbyturningtheirshields(盾)toward...
问题详情：Greeksoldierssentmessagesbyturningtheirshields(盾)towardthesun.Theflashesreflectedbylightcouldbeseenseveralmilesaway.Theenemydidnotknowwhattheflashesmeant,butotherGreeksoldierscouldunderstandt...