柯林斯詞典all-time 1. ADJ You use all-time when you are comparing all the things of a particular type that there have ever been. For example, if you say that something is the all-time best, you mean that it is the best thing of its type that there has ever been. 空前的[ADJ n] The president's popularity nationally is at an all-time low. 總統(tǒng)在全國的聲望處于歷史最低點。 返回 all-time劍橋詞典An all-time high, low , best , etc. is the highest , lowest , best , etc. level that has ever been. 前所未有的，空前的 After three years of drought , the water in the lake had reached an all-time low . 遭受三年干旱后，該湖水位達(dá)到歷史最低點。 返回 all-time