uncertainty
🇺🇸
/ʌnˈsɜːrtnti/
🇬🇧
/ʌnˈsɜːtnti/
not being sure about something
His uncertainty about the future made him anxious.
他对未来的不确定性使他感到焦虑。
something that cannot be known for sure
The uncertainty of the weather made planning difficult.
天气的不确定性使得计划变得困难。