effective; effectual;produce good results ❍ 惩前毖后、治病救人的方针，是长期以来～的方针。Learning from past mistakes to avoid future ones and curing the sickness to save the patient is a policy which has long proved effective.
行之有效
effective;effectual ～的疗法 effectual remedy
行之有效xínɡ zhī yǒu xiào
实行起来非常有效果。effective, effectual, be proven effective in practice