booster

• 多义词，指支持某个政治人物或队伍的人、积极的支持者，也指从商店偷窃的窃贼、信号放大器、多级火箭的第一级，或增强免疫力的加强针疫苗。

A noun with multiple meanings, including a person who supports a politician or team, an active advocate, a thief who steals from stores, an amplifier for signals, the first stage of a multistage rocket, or an additional dose of a vaccine to reinforce immunity.

1. Supporter or AdvocateB2formal

   A person who actively supports a politician, team, or cause.

   支持者

   • She is a strong booster of the local football club.
   • The candidate thanked his boosters for their tireless work.
   • Community boosters organized a fundraiser for the new park.

   同义词advocatebackerchampionenthusiastfanpartisanpromoterproponentsupporterupholder

   反义词adversarycriticdetractoropponent

2. Active AdvocateB2formal

   Someone who is an enthusiastic and active supporter and promoter of something.

   积极支持者

   • He is a well-known booster for renewable energy.
   • The organization relies on its boosters to spread the message.
   • She became a booster for arts education in schools.

   同义词advocateapostlebackerchampionenthusiastexponentfanpromoterproponentsupporter

   反义词adversarycriticdetractorfoeopponent

3. ShoplifterC1informalamerican

   A thief who steals goods from a store.

   商店扒手

   • The store detective caught a booster trying to hide items.
   • Security cameras help identify boosters in the mall.
   • He was arrested for acting as a booster in the jewelry store.

   同义词liftershoplifter

4. Signal AmplifierB2formaltechnical

   An electronic device that amplifies or restores the strength of a transmitted signal.

   信号放大器

   • The TV signal needed a booster to reach the remote cabin.
   • Technicians installed a booster to improve cell phone reception.
   • A signal booster is essential for long-distance communication.

   同义词amplifierbooster amplifier

   反义词attenuatordamperfilter

5. Rocket StageC1formalscientific

   The first stage of a multistage rocket that provides initial thrust for liftoff.

   助推器

   • The rocket's booster separated after the first two minutes of flight.
   • Engineers tested the new solid-fuel booster for the space mission.
   • The booster successfully propelled the spacecraft into orbit.

6. Additional DoseB1formalmedical

   An extra dose of a vaccine given to maintain or boost immunity after the initial series.

   加强针

   • Doctors recommend a booster shot every ten years for tetanus.
   • She received her COVID-19 booster last month.
   • The booster helps ensure the vaccine remains effective over time.

   同义词booster dosebooster shot