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B - 2无法通过红外线、声音、电磁波、视觉上的及雷达信号跟踪侦查。
The B-2 is hard to detect via infrared, acoustic, electromagnetic, visual or radar signals.
youdao
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B - 2无法通过红外线、声音、电磁波、视觉上的及雷达信号跟踪侦查。
The B-2 is hard to detect via infrared, acoustic, electromagnetic, visual or radar signals.
youdao