booster

名词 booster:

1. a person who backs a politician or a team etc.
   同义词：supporter, protagonist, champion, admirer, friend
2. someone who is an active supporter and advocate
   同义词：promoter, plugger
3. a thief who steals goods that are in a store
   同义词：shoplifter, lifter
4. an amplifier for restoring the strength of a transmitted signal
   同义词：booster amplifier, booster station, relay link, relay station, relay transmitter
5. the first stage of a multistage rocket
   同义词：booster rocket, booster unit, takeoff booster, takeoff rocket
6. an additional dose that makes sure the first dose was effective
   同义词：booster dose, booster shot, recall dose

1. Expendable rocket boosters.
   不能再用的助推火箭
2. Our vet is very efficient; he sends us a reminder when the cat is due for a booster vaccination as a matter of course.
   我们的兽医工作效率很高，当猫要按时免疫接种时，他总给我们寄一张提醒单来。

boost.er

n.（名词）
One that boosts, as:
推动者：一个推动的人或物，如：
A device for increasing power or effectiveness.
起推动作用的辅助装置：用来增加动力或效力的装置
An enthusiastic promoter, as of a sports team or school.
积极的支持者：某体育运动队或学校等的热情支持者
Electronics A radio-frequency amplifier.
【电子学】 辅助放大器：一种无线电频率放大器
The primary stage of a multistage rocket that provides the main thrust for launch, liftoff, and initial flight.
助推器：多级火箭的第一级，为发射、升空和最初飞行提供主要推力
A booster shot.
强化注射剂量
Slang One who steals goods on display in a store.
【俚语】 商店扒手：偷商店摆设的货物的扒手