1. 出乎意料的;未預見(jiàn)到的 If something that has happened was unforeseen, it was not expected to happen or known about beforehand.
e.g. Radiation may damage cells in a way that was previously unforeseen... 輻射可能以一種我們過(guò)去未能預見(jiàn)到的方式破壞細胞。 e.g. Unfortunately, due to unforeseen circumstances, this year's show has been cancelled... 遺憾的是,由于一些意外情況,今年的演出被取消了。