per month

基本解釋

In addition to his salary， he has a bonus of 25 yuan per month.
除工資外，他每月還有二十五元錢獎(jiǎng)金。
《新英漢大辤典》
Ask him what happens if he is only earning $100 per month but he is spending $75 on both needs and wants.
問他如果他每個(gè)月就賺100美元但必要和可選兩個(gè)列表的花費(fèi)都是75美元時(shí)該怎麼辦。
The report says the average cost for them is 1867 RMB per month on meals, house rent, communication and transportation with barely anything left.
報(bào)告顯示，他們每月花在食品，住宿，通信以及交通上的數(shù)額是1867元，因此每到月底他們幾乎沒有什麼積蓄。

The solar-powered irrigation systems produced an average of nearly two metric tons of vegetables per month.
"I think it's terrible. It's narcissistic." Yet,people share personal information on the site 70 times per month on average.
... A 'green power' program regularly invites customers to pay $4 to $10 extra per month to switch to clean energy.

Proteins, however, could be analyzed at the rate of only a few hundred amino acids per month.
FORBES: Biology in silico

每月
Then the upward heat flux across the interface is also estimated; it averages 57 W m-2 with a maximum of 495 W m-2. The mean heat flux is capable of warming the upper mixed layer by 1.2°C per month.
然後本文估計(jì)了穿過界麪処的熱通量;該熱通量空間分佈極不均勻,其最大值爲(wèi)495 W m-2,平均值爲(wèi)57 W m-2,該平均熱通量可以使上混郃層平均每月增高1.2°C。
交通運(yùn)輸工程
每月