Where people were concerned, his threshold of boredom was low.
涉及人的事情，他便极易感到厌烦。
《牛津词典》
2
It's probably a very good thing for you when you are small, but as soon as you reach a surprisingly lowthreshold, you're better off hosting it yourself.
在规模很小的时候，这可能是非常好的一件事情，但是一旦达到了下限阈值，你最好自己来搭建一个基础架构。
3
The first value is the lowthreshold for memory usage.