undetectable

英 [ˌʌndɪˈtektəbl]

美 [ˌʌndɪˈtektəbl]

adj.  看不见的; 察觉不出的; 发现不了的

BNC.33908 / COCA.22327

牛津词典

adj.

• 看不见的；察觉不出的；发现不了的
  impossible to see or find
  1. The sound is virtually undetectable to the human ear.
     这声音实际上是人耳难以听得到的。

英英释义

adj

• barely able to be perceived
  1. the transition was almost indiscernible
  2. an almost insensible change
  Synonym:indiscernibleinsensible
• not easily seen

双语例句

• The peak force and peak pressure greatly increased in some donor great toes, but distinctly decreased, even undetectable for some others.
  部分供足砪趾的峰压力、峰压强异常增高，而另有部分供趾的则明显降低甚至缺失；
• Picking locks is now undetectable to everyone standing around watching.
  开锁现在不被那些在周围守卫的人注意。
• The Caraway and liquorice compounds reached their peaks in the breast milk two hours after consumption, while the banana compound became undetectable after one hour.
  香菜和甘草在乳汁中的含量在进食后2小时达到高峰，而香蕉化合物在1小时后就检测不到了。
• There we read the Buddha's words on how cream of ghee is always present within all forms and modifications of milk, but is undetectable until it has been purified of its obscuring elements.
  那里我们读到佛经的文字如何酥油的精华表现为所有的形式和牛奶的改变，但是它是无法察觉的直到它已经给从它遮蔽的元素之中纯化了。
• Seven out of eight patients who got the highest dose of the drug had undetectable levels of the virus.
  八名患者中七名在服用最大剂量药物后探测不到病毒水平。
• The implication is that the effect is to make what was undetectable detectable.
  这就意味着它的效果，就是让未曾现形的密码现形。
• Like a criminal he began to fashion in his own mind the undetectable crime.
  好像一个罪犯，他开始通盘考虑这件不能为外人发现的罪行。
• 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。
• 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。
• The sweet smell of success might, in other words, actually be undetectable.
  换句话说，胜利的甜蜜气味是无法觉察的。