accidental

英/ˌæksɪˈdentl/

美/ˌæksɪˈdentl/

adj.意外的;偶然的

n.偶然;次要方面

例句

Information must be stored so that it is secure from accidental deletion. 

必须把资料保存起来，这样才不至于无意中删除。

His hand brushed against hers; it could have been either accidental or deliberate.

就在有意无意间，他的手轻轻拂过她的手。

Our accidental meeting led to our becoming friends. 

我们的偶然相遇使我们成为朋友。