have an influence on (sb/sth); produce an effect on 影响: The tax increases have affected us all. 加税已经影响了我们大家. * The change in climate may affect your health, ie be bad for you. 气候的变化可能影响你的健康. * Their opinion will not affect my decision. 他们的意见不会影响我的决定. 
(of disease) attack (sb/sth); infect （指疾病）侵袭（某人[某物]）; 感染: Cancer had affected his lungs. 癌已侵及他的肺脏. 
cause (sb) to have feelings of sadness or sympathy; touch 使（某人）有悲伤或同情的感觉; 感动: We were deeply affected by the news of her death. 她死亡的噩耗使我们深为感伤.> affecting moving or touching 动人的; 感人的: an affecting appeal for help 感人的求助. affectingly adv.
NOTE ON USAGE 用法: Affect is a verb meaning `have an influence on' *affect是动词, 意为‘影响’: Alcohol affects drivers' concentration. 酒精能影响司机的注意力. Effect is a noun meaning `result or influence'*effect是名词, 意为‘效果’或‘影响’: Alcohol has a very bad effect on drivers. 酒精对司机的影响很大. It is also a (formal) verb meaning `accomplish' *effect这个词还是个（文雅的）动词, 意为‘完成’: They effected their escape in the middle of the night. 他们半夜逃脱了.