Grammar Point
A Keyphrase should be a short phrase that brings to mind and helps to remember the information on this frame.
... only (e.g. "one time only", "today only")
Noun +
When attached as a suffix to a noun, it indicates a limit or a specific boundary, often meaning something is restricted to that specific time or quantity.
The suffix is attached directly to nouns representing time, frequency, or quantity to show that the action or state is restricted to that amount.
今日
Limited to today only.
一回
Limited to one time only.
十人
Limited to ten people.
Note
This grammar point is often used in formal announcements, signs, or when emphasizing a strict limit. It can also imply that once this limit is passed, the current state or offer will end.