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booster

booster /ˈbuːstɚ/ noun
plural boosters
booster
/ˈbuːstɚ/
noun
plural boosters
Learner's definition of BOOSTER
[count]
: something that boosts someone or something: such as促进物;推动力
: an action or substance that makes something stronger or more effective(起加强或推动作用的)推动力,增效剂
: something that helps or encourages someone or something起促进或激励作用的事物
: booster shot
US : someone who supports an idea or organization支持者
: part of a rocket that provides force for the launch and the first part of the flight火箭助推器
see also booster seat

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