![Greeksoldierssentmessagesbyturningtheirshields(盾)toward...]( "Greeksoldierssentmessagesbyturningtheirshields(盾)toward...")
- 問題詳情：Greeksoldierssentmessagesbyturningtheirshields(盾)towardthesun.Theflashesreflectedbylightcouldbeseenseveralmilesaway.Theenemydidnotknowwhattheflashesmeant,butotherGreeksoldierscouldunderstandthemessages.Romansoldiersinsomeplacesbuiltlongrowso...
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