劍橋詞典used to refer to a phone number that is not made public by the phone company （電話號碼）不在電話簿上的 We've gone ex-directory because we were receiving so many unwanted calls . 我們已經(jīng)把我們的號碼從電話號碼簿中取消了，因爲(wèi)老是接到打錯的電話。 返回 ex-directory