efficacious

英 [ˌefɪ'keɪʃəs] 美 [ˌefɪ'keɪʃəs]

• adj. 有效的；灵验的

英英释义

Adjective:

1. marked by qualities giving the power to produce an intended effect;

   "written propaganda is less efficacious than the habits and prejudices...of the readers"
   "the medicine is efficacious in stopping a cough"
   

2. producing or capable of producing an intended result or having a striking effect;

   "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"
   "effective teaching methods"
   "effective steps toward peace"
   "made an effective entrance"
   "his complaint proved to be effectual in bringing action"
   "an efficacious law"
   

例句

用作形容词 (adj.)

1. Vaccination for smallpox is efficacious.
   种牛痘防天花是有效的。
2. This medicine is efficacious against heart disease.
   这个药封心脏病有效。
3. The medicine is efficacious in stopping a cough.
   这种药在止咳方面很灵验。

经典引文

• At present there is no convincing evidence that psychoanalytic treatment as such is efficacious.

  出自： P. Medawar

近反义词

【近义词】

• effective 有效的
• effectual 有效果的
• efficient 效率高的
• practical 明智的
• energetic 精力旺盛的
• fruitful 多产的
• successful 成功的
• useful 有用的
• worthwhile 值得(做)的
• valuable 贵重的

【反义词】

• inefficacious 无效力的