同义词： background noise
以上来源于: WordNet
Soon she was certain that the noises came from wild creatures of some kind, the more so when, originating in the boughs overhead, they were followed by the fall of a heavy body upon the ground.
很快，她确信这些声音是某种野外的动物发出来的，她还听出来，有些声音是从头顶上的树枝丛里发出来的，随着那些声音还有沉重的物体掉到地上的声音。
And some researchers thought that any noises produced by the energetic particles that cause the light show would be far too high in the sky to be heard on the ground.
另外，一些研究人员认为形成北极光的高能粒子离地面太远，它们发出的声音因而无法被听到。
Random noises have uniform rules and they comprise of circumstance noise, measurement error and ground microseism.
而随机噪声没有统一的规律，它包括环境噪声、测量误差、地面微震等。
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