oxygen
🇺🇸
/ˈɑːksɪdʒən/
🇬🇧
/ˈɒksɪdʒən/
A gas in air that living things need to breathe and stay alive.
Plants produce oxygen during the day, which helps us breathe.
植物は日中に酸素を生成し、それが私たちの呼吸を助けます。