uncertainty
/ˌʌnˈsɜːtəntɪ/noun
(pl. -ies)［mass noun］
1- the state of being uncertain不确定性; 不确信, 靠不住：
times of uncertainty and danger.
不确定而危险的岁月。
1.1
- count noun(usu. uncertainties) something that is uncertain or that causes one to feel uncertain不确定事物; 难以预料的事物：
financial uncertainties.
财政上的不确定因素。