un·de·tect·ed
adjective/ˌʌndɪˈtektɪd/
/ˌʌndɪˈtektɪd/
- not noticed by anyone
未被注意的 - 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。
- How could anyone break into the palace undetected?