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

• 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。
• 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 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。
• 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。
• Although hair transplants have advanced to the stage where they are virtually undetectable ( no more plugs of hair), they still rely on moving hairs from one place to another.
  虽然头发移植技术已经发展到使种植的毛发外观自然（与周围的头发无区别），但该技术仍然要靠从一皮瓣到另一条皮瓣置换。
• 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 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。
• 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。
• In most cases, the protein that PTEN produces was undetectable in tumor cells, but clearly present in nearby normal cells.
  在大多数的病例的肿瘤细胞中都检测不到PTEN产生的蛋白，但这种蛋白存在于周围的正常组织中。
• 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。