The ultraviolet in Hainan province is much too harsh.====================================================用harsh比用heavry或者strong都更专业和地道,个人认为。当让也可以用severeharsh /h'ɑːrʃ/ (harsher harshest)1 [ADJ]Harsh climates or conditions are very difficult for people, animals, and plants to live in.The weather grew harsh, chilly and unpredictable.= severe