adj. 想不到的，料不到的,意外的,忽然的,突然的
变形：副词：unexpectedly；
1、The country needs a defence capability as insurance against the unexpected.
国家需要有一定的防御能力，以应对不可预知的情况。
2、They were horrified at this unexpected turn of events.
这种出乎意料的形势变化让他们无比震惊。
3、For all its drama, the event was not unexpected.
虽然这件事带有戏剧性，但并不意外。