무색, 무취의 반응성이 강한 기체로, 원자 번호 8번의 화학 원소이자 생명 유지와 연소에 필수적인 성분.
A colorless, odorless reactive gas, the chemical element of atomic number 8, which is essential for life and combustion.
예문:
"The patient was given supplemental oxygen to help with their breathing difficulties."
"Plants produce oxygen as a byproduct of photosynthesis during the day."
"Oxygen is necessary for the combustion process to occur in an engine."