平均固定成本是三个相关成本平均值之一。

Average fixed cost is one of three related cost averages.

youdao

接下来，我把每个月的平均成本加起来，计算出每个月的平均值，从而来追踪一段时间内的变化情况。

My next step is to sum up and average the monthly costing figure to track its change over time.

youdao

可是西哈特福德(离波士顿和纽约(New York)各两个小时的车程)的生活成本比全国的平均值高20%。

However, the cost of living in West Hartford (which is two hours from Boston and New York) is 20% more than the national average.

youdao