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

• S.defense technology to China, including data on an electronic propulsion system that could make submarines virtually undetectable.
  技术中包括一种让潜艇不可侦测的电子推进系统有关的数据。
• Polar Bears are nearly undetectable by infrared cameras, due to their transparent fur.
  红外线摄像机几乎探测不到北极熊，因为它们的皮毛是透明的。
• And the distance between driving a used Hyundai Elantra and a new Jaguar XJ is well nigh undetectable compared with the difference between motoring and hiking through the muck.
  试想一下，开一辆二手的现代伊兰特与开一辆崭新的美洲豹XJ之间的差别，肯定没有开车与徒步跋涉烂泥滩之间的差别明显。
• Fine-grained homogeneous rock ( such as basalt) containing minerals undetectable by the naked eye.
  成分细密的同质岩石（如玄武岩）含有肉眼看不见的矿物。
• 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。
• Osteopontin-c was detected in16 of the20 tumors ( 80%) and was undetectable in the22 normal specimens, the researchers report.
  研究人员报告在20个肿瘤中有16检测到骨桥蛋白C（80%），但在22例正常标本中没有被检测到。
• Shock, with diminished consciousness, lack of urine output, cool, moist extremities, a rapid and feeble pulse, low or undetectable blood pressure, and pale skin.
  休克，意识减弱，尿少，体凉，四肢潮湿，脉动快速和微弱，低血压或检测不到血压，皮肤苍白。
• 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。