She has always felt compelled to reduce any and all uncertainties in her life.

她总是觉得必须要减少生活中的任何不确定因素。

On the day her son began school, she meditated on the uncertainties of his future.

在她儿子入学那天，她深思了有关他未来的种种不确定因素。

They tried to buffer themselves against problems and uncertainties.

他们尽力保护自己免受困难和不确定因素的影响。

But there are uncertainties.

但是，同时也存在着一些不确定性。

But China's suppliers face uncertainties.

但是中国的供应商面临不确定性。

China still faces big uncertainties in 2010.

中国在2010年仍将面临巨大的不确定性。