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 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。
• 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。
• So Plato could still insist things that are invisible in the sense of undetectable can't be destroyed.
  所以柏拉图仍旧可以坚持说无形的东西，无形这里指不能检测到，是不能毁灭的。
• Three months after ribavirin therapy commenced, HEV RNA was undetectable in serum samples from all patients.
  在开始单独使用利巴韦林治疗后，所有患者血清样本中检测不到HEVRNA水平。
• 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 recent years, scientists have demonstrated that subtle chemical variations in many foods, including honey undetectable to the tongue or the naked eye can give a strong indication of where it originated.
  近年来，科学家已证明，在包括蜂蜜在内的许多食物中，通过舌头和肉眼均无法察觉的细微化学变化，可以充分表明其原产地是哪儿。
• 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。
• 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。
• It's still possible that some as-yet-unknown genetic factor, undetectable by even the most advanced tools, may explain the discordance in the study.
  仍然有可能的是，一些未知的遗传因素，即使是最先进的工具也发现不了，这些也许能解释研究中不一致的地方。