Imagine a point when substantial numbers of people are taking your course. (elearningindustry.com)
It might be better to have a stringent rule about when one is entitled to sue substantial numbers of people, or a requirement such suits can not be dropped by the plaintiff. (slaw.ca)
At the same time it was estimated that there yet remained five hundred to a thousand other language groups spoken by substantial numbers of people into which translations should be made, and many of them will be. (religion-online.org)