booster
Definition
A person or thing that promotes or increases something; also, a supplementary dose of a vaccine.
한국어 증가시키는 사람이나 물건
Example
"She got a booster shot to strengthen her immunity."
A person or thing that promotes or increases something; also, a supplementary dose of a vaccine.
한국어 증가시키는 사람이나 물건
"She got a booster shot to strengthen her immunity."