単語ネットワーク: 산소
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関連単語 (4)
공기
Air, atmosphere.
A1호흡
The process of taking air into and expelling it from the lungs.
B1생명
The condition that distinguishes animals and plants from inorganic matter.
B1대기
The envelope of gases surrounding the earth or another planet. It is essential for describing air pollution and environmental issues in IELTS.
B1
