rev up (someone/something)
phrasal verb with rev verb [ I or T ] uk/rev/ us/rev/ -vv-
（使）活跃起来;（使）积极起来
to become more active, or to make someone or something become more active
The hotel is revving up for the busy summer season. 正值忙碌的夏季，这家饭店的节奏也变快了。
drugs which rev up your nervous system 刺激神经系统的药物