But after a decade of intelligence-gathering, counter-attacks and defensive measures, America does seem a good deal less vulnerable than it was on September 10th ten years ago.
但在十年多的情报搜集，反攻击和防御措施后，今天的美国，的确看似比十年前九月十日脆弱的美国大有改善。
The particle counter is of high intelligence and anti-jamming, and the detection is accurate and quick.
该颗粒计数器智能化程度高、抗干扰能力强、检测准确快速。
Based on these, a clear concept of counter-intelligence activities is deduced.
在此基础上，推导出较完善与清晰的反情报活动概念。
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