English translation of '速效'

名

1. fast action
   ⇒ 用这种方法减肥有速效。 (Yòng zhè zhǒng fāngfǎ jiǎnféi yǒu sùxiào.) You will see quick results with this diet.
   ⇒ 速效止痛片 (sùxiào zhǐtòngpiàn) fast-acting pain killer