每月的累加总计是多少？

What is the cumulative total (or running sum) by month?

年轮的累加，并非意味着垂老；

Nobody grows old merely by a number of years.

这些费用累加后的总和相当巨大。

These fees add up to rather large sums.

梗塞灶一般较小，但其效应可以累加。

The infarcts are usually small but cumulative in their effect.

跨许多个数据元素来看，这样的延迟是累加的。

Across many data elements, this delay can add up.