uncertainty
/ʌnˈsɜ:tntɪ; ʌn`sətntɪ/ n
(a) [U] state of being uncertain 无把握; 不确定; 变化不定; 犹豫
The uncertainty is unbearable! 事情定不下来难以忍受!
(b) [C esp pl 尤作复数]
thing which is uncertain 无把握、 不确定或变化不定的事物
the uncertainties of life on the dole, ie as an unemployed person 依靠救济金生活的不安定.