abnormal distribution短语¹⁴⁴⁹⁷²⁺² 基本例句 非正态分布 Fluorine is an important trace element closely related to health, and some diseases in living organisms may arise from the abnormal distribution of fluorine in the environment. 氟是一种重要的微量生命元素，环境中氟过量或缺乏都会导致机体产生疾病。 bioon