hot的名词形式：hotness

n.暑热；热烈；热心；热感

例句：Most people complain about the hotness in summer.

许多人抱怨说夏天太热了。

Derived from pepper ( especially black pepper); source of the hotness of black and white pepper.

来源于胡椒（尤其是黑胡椒），是黑胡椒和白胡椒的辣味源。