The spokesman said the attack so far out at sea was a clear sign that the international patrols against pirates were having a “marked effect on pirate activity in the area”.的翻译：什么意思？中文翻译英文，英文翻译中文，怎么说？

发言人说，远在海上攻击是一个明显的迹象，打击海盗的国际巡逻了“关于在该地区的海盗活动效果显着”。