十个男性和八个女性带着降噪耳机接受了mri扫描，并按照指示简单被动地接受音乐。
Ten men and eight women entered the MRI scanner with noise-reducing headphones, with instructions to simply listen passively to the music.
Nmap是一个非常灵活的工具，它可以主动或被动地扫描远程(和本地)系统。
Nmap is an extremely flexible tool that can do active and passive scanning of remote (and local) systems.
尽管它没有真正的隐形设备，但足以逃避被动传感器的扫描。
While not a true cloaking device, it is nonetheless effective against passive sensor scans.
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