| 单词 | booster |
| 释义 | boost·er /`bustə; ˈbuːstə/n 1. confidence/ego/morale etc booster something that increases someone's confidence etc 增强信心/自尊/士气等的事物 2. [c] an engine that provides additional power for a spacecraft 飞船推进器 3. [c] a small quantity of a drug that increases the effect of one that was given before ［增强药效的］附加剂量，加强剂:◇a booster vaccination 疫苗加强剂 |
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