n.侦查，察觉，发觉，检查
The detection rate for racial crimes is appallingly low.
种族罪案的侦破率之低让人震惊。
The plane is used for electronic jamming and radar detection.
这架飞机用于进行电子干扰和雷达探测。
crime prevention and detection
犯罪的预防和侦查
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