The courier apologized because the package arrived with a large water blotch on the label.

快遞員道歉，因為包裹送達時標籤上有一大片水漬。

Please reprint the contract; there is an ink blotch covering the client's signature line.

請重新列印這份合約，客戶簽名欄上有一塊墨水污漬。

The hotel guest complained about a dark blotch on the carpet near the window.

飯店房客抱怨窗邊地毯上有一塊深色污漬。