2ADJ-GRADED 热闹的;活跃的;新潮的 If you describe something or someone as happening, you mean that they are exciting or lively, and involved in the newest fashions or trends. 热闹的;活跃的;新潮的 [informal]
...a definitive area-by-area guide to the hip and happening bands.
介绍各个地区新潮流行乐队的权威指南
...the most happening place at the moment, the Que Club.