The clerk became an unwitting accomplice when she approved the fraudulent invoice without checking.

那位職員沒有查核就核准了偽造的發票，在不知情的情況下成了共犯。

Several customers were unwitting victims of the phishing email that looked like our billing notice.

好幾位客戶不知情地成了那封假冒我們帳單通知的釣魚郵件的受害者。

The courier unwittingly delivered the package to the wrong warehouse because the label was outdated.

因為標籤資料過時，快遞員在不知情的情況下把包裹送到錯誤的倉庫。