A popular concept that is used both in macro economic theory, as well as in micro economic theory is that of marginal change.

在宏观经济理论以及在微观经济理论中有一个流行的概念是边际变化。

Marginal change can be explained as a small addition or subtraction, in proportional comparison, to the total quantity of some variable.

边际变化可以解释为一个小的比例中的加法或减法，对总数的影响。

The additional cost is calculated using marginal cost method, in which the user's payment depends on whether the marginal change exceeds the maximum capacity.

利用边际成本法计算附加成本，判断交易量的边际变化是否超过设备的最大容量对用户进行收费。

Indeed, Oxford Analytics has recently reported that even a 25 percent appreciation in China's currency would bring about only a marginal change in the trade deficit.

事实上，牛津大学的分析师们最近发表的报道称，即使美元对人民币汇率提高25%，也只能对这一贸易赤字问题起到微乎其微的作用。

Climate change is already adding an additional set of stresses in areas that are already fragile, with marginal livelihoods and thin margins of survival when shocks occur.

一些地区本已脆弱，一旦打击到来，生计艰难，存活渺茫；而气候变化已经为这些地区添加了更多的压力。