| 单词 | booster |
| 释义 | booster —booster /ˈbuː.stər/ aep /-stɚ/ noun [C] (DRUG) ► F0 an extra small amount of a drug given to increase the effect of the same drug given some time before, to protect a person from illness: » a polio boosterThesaurus+: ↑Medicine in different formsnoun [C] (ENGINE) ► F0 an engine on a spacecraft that gives extra power for the first part of a flight: » a rocket boosterThesaurus+: ↑Space travelnoun [C] (IMPROVEMENT) ► F0 something that improves or increases something: » a confidence/morale boosterThesaurus+: ↑Making things better , ↑Becoming better |
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