How could anyone break into the palace undetected?
怎么会有人神不知、鬼不觉地潜入皇宫呢？
The disease often goes/remains undetected for many years.
这种疾病经常潜伏多年而不被察觉。
1.没有被发现的,没有被识破的
1.not noticed or seen
1.Cameron and John followed Derek out of the tent. Thankfully, it was dark, as always, so they were able to move through the camp undetected.
卡梅隆和约翰跟着德里克走出帐篷。值得庆幸的是，外面一如既往，黑黑的，以便他们能够穿过基地不会被发现。
2.The cash to fund the original investment or investments seems to have left the company undetected.
用于最初一笔或多笔投资的资金，似乎在无人察觉的情况下离开了公司账户。
3.Before his fall, he had been lining up a fourth (so far undetected) big customer for his full-service bomb-building package.
在他下台以前，他已在为他完全服务的核武器大厦中安排到第四位（到目前为止还没有发现）大顾客。
4.Be involved in their lives - The more you know about your children's lives, the less room there is for a lie to go undetected.
这说的是要多多介入孩子们的生活。只有彼此足够了解，才没有撒谎的空间。
5.Since workplace pilfering sometimes goes undetected, it's unclear how much more severe the problem is now than in healthier times.
尽管车间盗窃行为有时未被发现，但问题的严重性比经济更健康时期更令人难以了解。
6.Infected cells are able to live on, undetected by the immune system, and provide the machinery for the virus to reproduce and spread.
那些受感染的病毒能存活并且逃过免疫系统，因而细胞为病毒的再生和传播提供场所。
7.However, a unilateral cervical mass that is firm and non tender should always raise the question of an undetected nasopharyngeal carcinoma.
单侧颈部肿块坚实不柔软要警惕潜在的鼻咽癌。
8.Thus, this coverage gap raises the likelihood of such a defect going to production undetected.
照这样说，这个覆盖空缺增加了这样一个缺陷进入未被发觉的产品中的可能性。
9.Remember also that in the higher dimensions it is impossible for a lie to be undetected inasmuch that your thoughts can be read.
也请记住，在更高的维度中要让谎言无法被鉴定是不可能的，由于你们的想法都可以被阅读。
10.Until recently, though, lax enforcement has meant that foreigners working illicitly have been able to stay undetected for years.
但是直到最近，这项规定的执行都不到位，外国人可能在华非法工作很多年而没有被发现。