Efficacious

(adj.) marked by qualities giving the power to produce an intended effect; 'written propaganda is less efficacious than the habits and prejudices...of the readers'-Aldous Huxley; 'the medicine is efficacious in stopping a cough' .

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• The design was efficacious; for I remember that my mother seemed more at ease during the rest of the evening, and that Peggotty observed her less. 查尔斯·狄更斯. 大卫·科波菲尔.
• Would it be efficacious? 夏洛蒂·勃朗特. 雪莉.
• Undoubtedly it was as good a thing as you could do; though I question if some other oils would not have been equally efficacious. 托马斯·哈代. 还乡.
• A solution of ammonia is nearly equally efficacious in removing the chloride. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• Yellow or green are more efficacious; but blue and violet light produce the most decided and powerful effects. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• I fancy that he had taken steps to make that draught efficacious, and that he quite relied upon your being unconscious. 阿瑟·柯南·道尔. 福尔摩斯回忆录.

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