ointment

藥膏、油膏、軟膏

The doctor told me to apply this ointment twice a day.

醫生要我一天塗兩次這種藥膏。

美中不足、唯一的缺點口語

The only fly in the ointment is the hotel's poor location.

唯一美中不足的是這間飯店的位置不好。