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

　　必須把資料保存起來，這樣才不至于無意中刪除。

　　At least 10 000 children are involved in accidental poisonings every year.

　　每年至少有1萬名兒童意外中毒。

　　I didn't think our meeting was accidental ─ he must have known I would be there.

　　我認為我們相遇不是偶然的——他肯定知道我要去那里。

　　We insure against all damage, accidental or otherwise.

　　我們的保險包括一切意外或其他損失。

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

　　就在有意無意間，他的手輕輕拂過她的手。