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

• 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。
• Instead, their brain waves are very slow and weak, sometime all but undetectable.
  代之为非常缓慢和微弱的脑电波，有时甚至不能监测到脑电活动。
• 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 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。
• The advantage to criminals is that kernel malware is usually undetectable when using standard antivirus and antispyware applications.
  罪犯的优势是内核恶意软件用标准抗病毒和抗间谍应用程序通常检测不到。
• 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。
• It was more likely that the virus was still present but had retreated to undetectable levels in MR stimpson's blood.
  这更象是病毒依然存在，只是血液中病毒的量已经少到检测不出的水平。
• 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。
• 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。
• 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。