effect是可数还是不可数

effect是可数名词。
effect 英[ɪˈfekt] 美[ɪˈfɛkt]
n. 效果; 影响; 印象; 所有物;
vt. 使发生; 引起; 产生（效果）;
[例句]Parents worry about the effect of music on their adolescent's behavior
父母担心音乐对青春期孩子的行为所产生的影响。
[其他] 第三人称单数：effects 复数：effects 现在分词：effecting过去式：effected 过去分词：effected

The design of the bicycle has managed to reduce the effects of wind resistance and drag.
这种自行车的设计成功地减少了风的阻力和摩擦力。

Many toxic effects can be studied at the cellular level.
许多毒效可以从细胞层次上去研究。

Businesses are feeling the indirect effects from the recession that's going on elsewhere
企业感受到了别处经济衰退带来的间接影响。

The leadership discussed a plan of economic measures to counter the effects of such ablockade
领导层讨论了计划采取的一揽子经济措施，以减轻这一封锁带来的影响。

结果, 效果, 作用, 影响, (在视听方面给人流下的)印象
effects n.
动产, (家庭)财物
虽然有复数，可是好像意思不太一样。