The two men sneaked into the museum undetected and stole some treasures.

这两个人神不知鬼不觉地潜入博物馆偷走了一些珍藏品。

This kind of undetected insignificant symptoms will stay in the body for a long time.

这种疾病症状不明显，会在人体内潜伏很长时间。

The undetected suspect is still at large.

嫌疑人仍未被发现，依然逍遥法外。

The spy ring had a fifth member as yet still undetected.

特务团伙的第五名成员仍未被发现。

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？

They managed to get away from the coast undetected.

他们设法了离开海岸，并未被人发现。

Undetected genetic changes?

未被发现的遗传变化？

The prank went undetected around the world.

全世界都没察觉这场胡闹。