uncertainty
🇺🇸
/ʌnˈsɜːrtnti/
🇬🇧
/ʌnˈsɜːtnti/
not being sure about something
His uncertainty about the future made him anxious.
他對未來的不確定性使他感到焦慮。
something that cannot be known for sure
The uncertainty of the weather made planning difficult.
天氣的不確定性使得計劃變得困難。