short, sharp shock

(Brit.)a brief but harsh custodial sentence handed down to an offender in an attempt to discourage them from committing further offences

(英)從速?gòu)膰?yán)打擊（對(duì)罪犯采取的簡(jiǎn)捷、嚴(yán)厲的監(jiān)管懲罰，以使其不再犯罪）