effectual [ɪˈfɛktʃuəl]

例句:

• They are almost as expeditious and effectual as Aladdin's lamp.
  他们几乎像如意神灯那么迅速有效.
  
• Quinine is an effectual preventive for malaria.
  奎宁是有效的疟疾预防药.
  
• This is the only effectual way to secure our present and future happiness.
  这是确保我们现在及以后都会幸福的唯一有效途径。
  
• The perjury of the witnesses placed an effectual barrier against conviction.
  来自A. Ure
• The most effectual Care...to insure us of God's performing his Part.
  来自J. Scott
• You shall not again tempt me to anticipate the question of effectual Grace.
  来自R. Baxter