dioxide

/daɪˈɑkˌsaɪd/

an oxide containing two atoms of oxygen in the molecule

中文释义：二氧化物

Carbon dioxide is a greenhouse gas that contributes to global warming.

二氧化碳是一种导致全球变暖的温室气体。

Plants absorb carbon dioxide and release oxygen during photosynthesis.

植物在光合作用中吸收二氧化碳并释放氧气。