最終更新日：2024/07/30

A portable battery, fitted with cables and a charger, used to charge a dead battery, especially in a car.

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battery booster

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battery booster

noun

A portable battery, fitted with cables and a charger, used to charge a dead battery, especially in a car.

I always carry a battery booster with me when I travel.

意味（1）

A portable battery, fitted with cables and a charger, used to charge a dead battery, especially in a car.