该艇为特殊任务而设计，适合海上高速追击和拦截，对突发事件进行快速反应，设计时速可达70节。
It is designed for maritime interception and dealing with accident at sea. The design speed can be 70 knots.
在最后一刻，那个物体从雷达屏幕上消失了，而高速的追击也被放弃。
At the last moment, the object disappeared from the radar screen and the high-speed chase was called off.
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