提醒的名詞英文怎么說

　　Extreme caution should be exercised when buying used tyres.

　　買二手輪胎時一定要極其謹慎。

　　There was a note of caution for the treasury in the figures.

　　這些數據向財政部亮出了一個警告。

　　I should not be in any danger here, but experience has taught me caution.

　　我在這里應該沒有任何危險，但閱歷已教會我謹慎。