effectual

producing or capable of producing an intended result or having a striking effect

产生或者能够产生预期的结果或者有显著的效果

an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumfor

风冷马达比巫婆的扫帚更有效地用于快速长途运输

effective teachinethods

有效的教学方法

effective steps toward peace

迈向和平的有效步骤

made an effective entrance

有效地进入

his complaint proved to be effectual in bringing action

他的申诉被证明是有效的

an efficacious law

有效的法律

effective

efficacious

having legal efficacy or force

具有法律效力的

a sound title to the property

财产的合理所有权

legal

sound