monthly limit

基本解释

Sending and viewing photos both count toward your monthly limit.
发送和浏览图片都有可能突破你每月的流量限制。
The credit control system ensures that the monthly limit isn't exceeded.
信贷控制制度保证每个月的限额不致突破。
zunqi1985.blog.163.com
And several people claiming to be Foxconn workers posted their pay stubs online showing that their overtime hours exceeded the legal monthly limit.
不少承认是富士康员工的人在网上贴了他们的工资单来证明他们的加班时间超过了法定每月工作时间的限制。

Kentucky is particularly conservative in having reduced their monthly limit to 7.2 grams in July.
FORBES: Do Pseudoephedrine Sales Predict the Number of Meth Labs in Your Community?
Pandora announced in a blog post today that it is installing a 40 hour monthly limit on free listening to its Internet radio service over mobile devices.
FORBES: Pandora Sets 40 Hour Monthly Cap On Free Mobile Listening
It seems to us that the monthly rental limit could add some mental overhead to the whole process — who wants to worry about keeping track of whether or not you've eclipsed that limit?
ENGADGET: Netflix announces new $11.99 plan