booster
Definition
A person or thing that promotes or increases something; also, a supplementary dose of a vaccine.
日本語 何かを促進または増やす人や物、またはワクチンの補助量
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.
日本語 何かを促進または増やす人や物、またはワクチンの補助量
"She got a booster shot to strengthen her immunity."