Ignorance of the new expense policy is not an acceptable excuse for late reports.

不了解新的報帳規定，並不能作為報告遲交的理由。

The customer apologized for his ignorance of the return deadline printed on the receipt.

這位顧客為自己不知道收據上印的退貨期限而道歉。

Our shipping delay resulted from ignorance about the new customs requirements in Japan.

我們的出貨延誤，是因為不了解日本新的海關規定。