1 ADJ [usually ADJ n] 顶级的;最高水平的;十分成功的 You can use big time to refer to the highest level of an activity or sport where you can achieve the greatest amount of success or importance. If you describe a person as big time, you mean they are successful and important. 顶级的;最高水平的;十分成功的 [informal]
2 N-SING 出名;走红;成功 If someone hits the big time, they become famous or successful in a particular area of activity. 出名;走红;成功 [informal]
SYN fame, glory, celebrity, prominence
3 ADV [ADVERB after verb] (强调重要性或程度深)极大地 You can use big time if you want to emphasize the importance or extent of something that has happened. (强调重要性或程度深)极大地 [US, informal, emphasis]