in the act片語KK [ɪn ðə ækt] /ɪn ðə ækt/發音片語1當場、正在作案時The thief was caught in the act by a security guard.那名小偷被保安當場抓住。2正當…之際、正在…的時候She was in the act of locking the door when the phone rang.她正要鎖門的時候,電話響了。