Limit sweets to once a week.
Meaning: It is important to limit your intake of sugary foods to once a week in order to protect your teeth from decay.
Choice of Words: Limit means to restrict or control something. Sweets are foods that are high in sugar, such as candy, cakes, and cookies. To indicates the direction or goal of an action. Once means one time. A week means during one week.
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Related Expressions