The sound is virtually undetectable to the human ear.
这声音实际上是人耳难以听得到的。
《牛津高阶英汉双解词典》
The null result of the Michelson - Morley experiment suggests that the effects of the ether are undetectable.
迈克耳 孙- 莫雷实验的否定结果使人想到,以太的效应是不能检查到的.
辞典例句
One endogenous protein , S 2, became undetectable in old EDL and DIA muscles.
S2在8月龄的膈肌和趾长伸肌存在,而在24月龄的膈肌和趾长伸肌中不能被检测到.
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There is an undetectable problem in loading the specified device driver.
加载指定的设备驱动程序过程中出现不可检测的问题.
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The windows are very clean and have undetectable levels of trace elements.
窗体很干净痕迹元素水平低到无法觉察.
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I occasionally give out an undetectable poison.
我有时也分发一种检查不出来的毒药.
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Meanwhile, the urban traffic alsoas large artery of Chinese railway, plays an undetectable role in it.
与此同时, 中国的铁血大动脉--城市交通在此种扮演着不可忽视的角色.
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Evi - 1 expression was undetectable ( Evi - 1 - negative ) in the bone marrow cells from 8 healthy volunteers.
8例正常人Evi -1 基因表达阴性,3/8例MDS1-Evi-1基因表达阳性,MDS1-Evi-1/GAPDH ( M-E/G ) <0.1.
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As be the vertically moved vehicle of the elevator has more undetectable effect in daily life.
电梯作为高层建筑垂直运行的交通工具,在日常生活中的作用越来越不可忽视.
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Impacts may create undetectable cracks that, because of the continuous loads, could result in structural damage.
由于长期使用, 可能会导致结构损坏,从而导致隐患的出现.
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Many diseases that could harm humans may be both undetectable and harmless in their natural hosts.
许多对人体有害的疾病在它们天然的寄生体中可能既不易被察觉又是无害的.
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They also had undetectable leels of virus in the brain and low leels in the spleen.
而对病毒在脑的水平及在脾中的低水平表达时他们也不能检测.
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