"producing an effect; having power to produce an effect," late 14c., Old French effectuel, from Late Latin effectualis, from Latin effectus "accomplishment, performance" (see effect (n.)). Used properly of actions (not agents) and with a sense "having the effect aimed at" (effective is used of the thing done or the agent and means "having great effect"). Related: Effectually; effectualness.
实用例句
1. 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.
来自《简明英汉词典》
2. Quinine is an effectual preventive for malaria.
奎宁是有效的疟疾预防药.
来自《现代英汉综合大词典》
3. 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。
来自柯林斯例句
4. Physical compulsion or restraint was effectual, of course, while it lasted.
当然, 体罚和管束在施行的当时还是有效的.
来自英汉文学 - 红字
5. The government should take effectual measures to combat unemployment.
