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二氧化碳 (èryǎnghuàtàn) is a compound word that is commonly used in everyday conversation to refer to carbon dioxide (CO2).
In everyday conversation, 二氧化碳 is often used in discussions about the environment and pollution. For example, people may talk about reducing their carbon footprint by using less energy and emitting less 二氧化碳 into the atmosphere. It is also commonly used in discussions about climate change and the role of 二氧化碳 in contributing to it.
In scientific or technical contexts, 二氧化碳 may be used to refer to the chemical compound itself, as well as its properties and effects. For example, scientists may discuss the process of photosynthesis and how plants absorb 二氧化碳 to produce oxygen.
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