Hearing loss can be an accumulative effect.

听力损失是一种效应。

The key is man's power of accumulative selection: nature gives successive variations; man adds them up in certain directions useful to him.

关键是人选择力量： 自然给予连续变异；人们在某些对他有用方向上将它们加起来。

It's only when you look at its properties on really big cosmological length scales, billions of light-years across, that you start to see the accumulative effects of the dark energy.

只有当在真很大宇宙尺度下才能看到它性质，数十亿光年跨度，开始看到暗能量影响。

And yet, if you look at the carbon footprint of the entire African continent, 48 African countries combined are responsible for less than one percent of accumulative carbon dioxide in the atmosphere.

然而， 如果看看整个非洲大陆碳足迹，48 个非洲国加起来对大气中二氧化碳贡献还不到百分之一。

It forecast that stormy weather will persist on Monday in parts of Zhangjiakou, Chengde, Tangshan, Baoding, the Xiong'an New Area, Langfang, and Shijiazhuang, the provincial capital, with accumulative precipitation likely exceeding 250 mm in some areas.

据预报，、承德、唐山、保定、雄安新区、廊坊和省会石庄部分地区将持续暴风雨天气，部分地区计降水量可能超过 250 毫米。

This certainly had not a profitable appearance, and I shook my head as if I would imply that it would be difficult to lay by much accumulative capital from such a source of income.

这当然没有盈利外表，我摇了摇头，好像在暗示，很难从这样收入来源获得大量资本。

When a variation is of the slightest use to any being, we cannot tell how much to attribute to the accumulative action of natural selection, and how much to the definite action of the conditions of life.

当变异对任何生物有丝毫用处时， 我们无法判断多少归因于自然选择作用， 多少归因于生活条件确定作用。