effective
/ɪˈfektɪv; ɪ`fɛktɪv/ adj
1
(a) having an effect; producing the intended result 有效的; 产生预期结果的
effective measures to reduce unemployment 减少失业的有效措施
The law is no longer effective. 该法令已失效.
(b) making a striking impression 产生深刻印象的
a very effective colour scheme 非常醒目的色调
an effective speech 精彩的演说.
2 [attrib 作定语]
(a) actual or existing 实际的; 实在的; 现有的
the effective membership of a society 现有的全体会员.
(b) fit for service or work 适於承担任务或工作的
the effective strength of the army 军队的战斗力.