ADJ [ADJ n] 迄今最…的;空前的;创纪录的 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. 迄今最…的;空前的;创纪录的
SYN unequalled, record, unique, exceptional