| 单词 | booster |
| 释义 | booster 3 ENTRIES FOUND: plural boosters plural boosters Learner's definition of BOOSTER [count] 1 : something that boosts someone or something: such as促进物；推动力 a : 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
b : something that helps or encourages someone or something起促进或激励作用的事物
c : booster shot 2 US : someone who supports an idea or organization支持者
3 : 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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