idiominformalto be doing whatneedsto be done in aparticularsituation:正在做需要做的事情,正在处理"We need tobookaflightbefore it's too late." "Don'tworry, I'm on thecase."“我们需要及早预订好航班。”“别担心,我正在办理这件事。”SMART Vocabulary: related words and phrasesTaking part and getting involved
actor
all in
along
attendee
be (a) party tosomethingidiom
catch
concern
hat
have a horse in the raceidiom
have skin in the gameidiom
horse
immersion
immersive
muscle
neck
plunge
plunge in/plunge intosomething
punch above your weightidiom
re-engage
re-engagement
See more results ?(Definition ofbe on the casefrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/be-on-the-case##