来自cum-,堆积，词源同cumulus.

1. the cumulative effect of human activity on the world environment

人类活动对世界生态环境日积月累的影响

2. Scientific knowledge is cumulative.

科学知识是积累起来的.

3. This drug has a cumulative effect.

这种药有渐增的效力.

4. It is simple pleasures, such as a walk on a sunny day, which have a cumulative effect on our mood.

一些简单的娱乐，譬如在一个阳光明媚的日子散步，就能使我们的心情更愉快。

5. The benefits from eating fish are cumulative.

吃鱼的好处要长期才能显现。