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この薬は一回だけ飲めば効果があります。
You only need to take this medicine once for it to be effective.
Exactly one time; only once.
この映画は一回だけ見れば十分です。
Seeing this movie once is enough.
一回だけのチャンスです。
This is a one-time opportunity.
Often used to emphasize that something happens or is allowed only once.
This phrase is often used when making a request or giving permission for something to happen only once.
The phrase emphasizes that something is limited to a single occurrence, which can be important in contexts like permissions, opportunities, or instructions.
Combination of 一回 (one time) and だけ (only).
Commonly used in everyday conversation to specify that something happens or is allowed only once.