无意中的

Mary accidentally let out that her mother had telephoned.

玛丽无意中说出她的母亲来过电话。

I accidentally knocked the vase off the table.

我无意中碰落了桌上的花瓶。

Walkers can unwittingly damage the fragile environment in which the birds live.

徒步旅行无意中破坏类生活的脆。