Apparently, unpredictable noise produces more fatigue than predictable noise, but it takes a while for this fatigue to take its toll on performance.

显然，预期之外的噪音比预期到的更容易使人疲惫，只是这种疲惫要过一会才能在人的身上体现出来。

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Subjects reported finding the predictable and unpredictable noise equally annoying, and all subjects performed at about the same level during the noise portion of the experiment.

受试者报告说，可预测的噪音和不可预测的噪音同样令人讨厌，而且在实验的噪音部分，所有受试者的表现都差不多。

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With all of the unpredictable and sudden noise of fire works, this holiday is one that can cause dog's great anxiety.

因为听到施放烟花时没有征兆和突然的噪音，狗狗会在节日里变得十分焦虑。

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