You use "less" with uncount nouns to refer to an amount of something that is smaller than another amount.

与不可数名词搭配可表示一组数量小于另外一组。

youdao

You use "less" with uncount nouns to refer to an amount of something that is smaller than another amount.

与不可数名词搭配可表示一组数量小于另外一组。

youdao