crash course片語KK [kræʃ kɔrs] /kɹæʃ kɔɹs/發音片語1速成班、速成課程、密集訓練班She signed up for a crash course in Italian before the trip.她在出發前報名了義大利語速成班。2快速入門、臨時磨練Raising twins was a crash course in patience for him.養育雙胞胎讓他快速學會了什麼叫耐心。