未来几天的天气情况还存在很大的不确定性。

There is a lot of ___uncertainty about the weather conditions in the coming days.

投资股市总是伴随着很多不确定性。

Investing in the stock market always comes with many ___uncertainties.

她语气中的不确定性让我很难做决定。

The ___uncertainty in her tone made it difficult for me to decide.