we have less to worry about的less可不可以换成fewer,为什么?

we have less to worry about的less可不可以换成fewer,为什么? in our life,we have less to worry about 少于 less than为什么是less less不是修饰不可数名词的么,把less换成fewer可以么 less ,fewer 翻译：That's one less problem to worry about. Fewer和 less的区别? Fewer和 less的区别 less 和fewer的区别 fewer和less的区别 less和fewer的用法? less 和 fewer的区别 fewer和less的用法