undetected

adj.

未被觉察的，未被发现的；未探测到的；

1. They feared some undetected trace of poison.
   他们担心一些未被识破的投毒痕迹。
2. It can conduct reconnaissance and surveillance while remaining undetected.
   执行侦察和监视任务，而不被对方发现。
3. He was certain they had come in undetected.
   他确定他们进来没有被察觉到。
4. The disease often remains undetected for many years.
   这种病经常潜伏多年而不被察觉。

Malaria parasite accumulates undetected in bone marrow
Absent or undetected? Effects of non-detection of species occurrence on wildlife–habitat models
Self-Induced Vomiting And Bulimia Nervosa: An Undetected Problem
Hybrid Tamarix widespread in U.S. invasion and undetected in native Asian range
Is Being Single a Risk Factor for Previously Undetected Abnormal Glucose Tolerance?
Dengue virus transmission dominated by those with undetected infection, study finds
Seroprevalence, correlates, and characteristics of undetected coeliac disease in England
Adult cirrhotic liver explants: precancerous lesions and undetected small hepatocellular carcinomas.
Lymphocytic choriomeningitis infection undetected by dirty-bedding sentinel monitoring and revealed after embryo transfer of an inbr...
Prablanc, C. & Martin, O. Automatic control during hand reaching at undetected two-dimensional target displacements. J. Neurophysiol...