[] extra information, activity, etc. that is not what is needed不适用信息；垃圾信息◆In all the noise of the Internet, I eventually found something relevant.在互联网上所有的垃圾信息里，我最终找到了一点有关的东西。 () extra electrical or electronic signals that are not part of the signal that is being broadcast or sent干扰；电子干扰信号