Something that is boiling or boiling hot is very hot.
'It's boiling in here,' complained Miriam.
“这里热死了!”,米瑞尔姆抱怨道。
If you say that you are boiling or boiling hot, you mean that you feel very hot, usually unpleasantly hot.
sweltering
When everybody else is boiling hot, I'm freezing!
当每一个人都热得不行时,我却冻得发抖!