长期性的英文：
chronicity
- And some advocacy groups question the long-term safety of irradiation.
另外一些支持团体对辐照的长期性安全感到怀疑。
n. 慢性
长期性
- My brother has chronic bronchitis.
我的哥哥患有慢性支气管炎。 - There is a chronic unemployment problem in America.
在美国存在长期失业问题。 - A chronic, whining complainer.
发牢骚的人老是嘀嘀咕咕抱怨的人 - Nixon was solitary and chronically suspicious.
尼克松为人孤僻，一向疑心很大。 - Chronic bronchitis,arthritis,etc
慢性支气管炎、关节炎等
