undetected相关的词根或词缀是: tect

What 's his pattern ? How does he get out undetected ?

他的计划是什么？他怎么会没别人发现？

The prank went undetected around the world .

全世界都没察觉这场胡闹。

It does not matter whether such behaviour was merely unauthorised or undetected .

这些行为只是未经批准还是未被发现，这并不重要。

And , as soon became apparent after its discovery , it had been spreading across the world towards these machines for over two years , undetected .

而且它一被发现就很快出现了显性感染的症状，在过去的两年多里它一直对世界各地的这些机器进行病毒传播，而且无法检测到。

But this inattention can leave skin cancers undetected .

这种疏忽可能会使皮肤癌漏检。