1. His agony and suffering, shedding his efficacious blood For the forgiveness of sin. 祂忍受极端的痛苦，为赦罪流出祂有效的的宝血。
2. The recently concluded second phase of clinical trial show the vaccine to be both safe and efficacious. 最近结束的第二阶段临床试验表明，该禽流感疫苗即安全又有效。
3. He said the movement must accommodate itself with the existing international reality and be nimble and efficacious in tacking its goals. 他说，不结盟运动必须适应当前国际的现实状况，并在达到目标的过程中要很灵活和有效。
英英解释
adj.
1. marked by qualities giving the power to produce an intended effect
2. producing or capable of producing an intended result or having a striking effect
