hot 最普通用词，指温度很高，往往有灼热、滚烫含义。
warm 通常指温度不太高，介于hot与cold之间，不太热也不太凉，给人以舒适感。
burning 暗示热源是火，多用于夸张，指像火烧一样热。
参考例句
1. Just a minute,I will hot up your milk soon. 稍等一等，我很快就能把你的奶热好。
2. It was a hot evening in June. 这是六月里一个炎热的傍晚。
3. The hot wire is caused by overload. 电线发热是由于过载造成的。
英英解释
adj.
1. used of physical heat; having a high or higher than desirable temperature or giving off heat or feel
2. characterized by violent and forceful activity or movement; very intense
3. extended meanings; especially of psychological heat; marked by intensity or vehemence especially of
4. (color) bold and intense
5. sexually excited or exciting
6. recently stolen or smuggled
7. very fast; capable of quick response and great speed
8. wanted by the police
9. being very spicy
10. performed or performing with unusually great skill and daring and energy
11. very popular or successful
12. very unpleasant or even dangerous
13. newest or most recent
14. having or bringing unusually good luck
15. very good; often used in the negative
16. newly made
17. having or showing great eagerness or enthusiasm
18. of a seeker; very near to the object sought
19. having or dealing with dangerously high levels of radioactivity
20. charged or energized with electricity
21. marked by excited activity
