강요나 압박 없이 자신의 의지에 따라 스스로 행하는 방식으로.
In a way that is done by one's own choice or free will, without being forced or compelled by others.
예문:
"The corporation voluntarily recalled the defective units before any official complaints were filed."
"She voluntarily gave up her seat to an elderly passenger on the crowded train."
"The witness voluntarily shared the information with the investigators to help solve the case."