A dioxide is a chemical substance made of two oxygen atoms joined to one atom of another element. You name it by the other element: carbon dioxide (CO₂) is the gas we breathe out and that plants take in; sulphur dioxide is a sharp gas from burning some fuels; silicon dioxide is the main stuff in sand and glass.

a dioxidedioxide（二氧化物） is a chemical substance made of two oxygen atoms joined to one atom of another element是由兩個氧原子跟另一種元素的一個原子結合而成的化學物質。you name it by the other element命名的時候是用那個「另一種元素」來叫它：carbon dioxide (CO₂) is the gas we breathe out and that plants take incarbon dioxide（CO₂，二氧化碳）就是我們呼出來、植物又會吸收的那種氣體；sulphur dioxide is a sharp gas from burning some fuelssulphur dioxide（二氧化硫）是燒某些燃料時產生的一種刺鼻氣體；silicon dioxide is the main stuff in sand and glasssilicon dioxide（二氧化矽）是沙子和玻璃的主要成分。

The word belongs to chemistry class, but carbon dioxide itself is everyday — it is in fizzy drinks and in talk about the planet’s weather.

the word belongs to chemistry class這個字是化學課的字，but carbon dioxide itself is everyday但 carbon dioxide 本身很日常——it is in fizzy drinks and in talk about the planet's weather它在氣泡飲料裡，也出現在講地球氣候的話題裡。

Though actually, dioxide is a naming pattern, not one single chemical. If you only remember CO₂, you have the most famous one, not the whole set. The di- just counts the oxygens.

though actually不過其實，dioxide is a naming pattern, not one single chemicaldioxide 是一種命名方式，不是單一一種化學物質。if you only remember CO₂如果你只記得 CO₂，you have the most famous one, not the whole set你記住的只是最有名的那一個，不是全部。the di- just counts the oxygensdi- 這個字首只是在算氧原子的數量。