The whistle was inaudible to the human ear.
这种啸声人耳听不到。
The noise is barely detectable by the human ear.
这种噪音人的耳朵几乎是察觉不到的。
The sound is virtually undetectable to the human ear.
这声音实际上是人耳难以听得到的。
The human ear consists of three parts.
人类的耳朵由3部分构成。
To the human ear, it may not sound like anything.
人类的耳朵听来，这个声音可能什么都像。
The human ear appears most sensitive to the sound of keening.
人类的耳朵对恸哭的声音最为敏感。
These very high frequency sounds are inaudible to the human ear.
这些频率非常高的声音人耳是听不见的。
Her voice kept rising, as if working its way out of the human ear.
她的声音越来越高，好像要把人的耳朵震聋似的。
Currently, most researches are focused on characteristics of human ear.
目前关于人耳识别的研究多关注于特征的提取。
The human ear is an incredible piece of engineering and exquisitely sensitive.
人的耳朵构造精巧，反应敏捷，是个不可思议的器官。
Unfortunately, the human ear does not judge clearly the degree of loudness of a noise.
很不幸，人类的耳朵并不能清楚地判断噪音的大小程度。
Unfortunately, the human ear does not judge clearly the degree of loudness of a noise.
很不幸，人类的耳朵并不能清楚地判断噪音的大小程度。
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