1.活動;活動力[U]He once engaged in anti-government activity. 他一度從事反政府的活動。
2.行動[U]The store was a scene of great activity. 這家商店顧客盈門。
3.活躍;敏捷[U]
4.(某一團體的)特殊活動;帶消遣性的活動[P1]Stamp collecting is my favorite activity. 集郵是我最喜愛的消遣。The school offers many recreational activities for the students. 該校為學生提供了很多娛樂活動。