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二氧化碳

èr yǎng huà tàn

HSK 6

Meaning

  • carbon dioxide CO2

Definition

一种无色无味的气体，由一个碳原子和两个氧原子组成，化学式为CO₂，是温室气体的主要成分之一。

A colorless, odorless gas composed of one carbon atom and two oxygen atoms, chemical formula CO₂, one of the main greenhouse gases.

Usage

用于描述气体、环境、化学、工业等领域，常与温室效应、光合作用、碳中和等概念关联。

Used in fields such as gas, environment, chemistry, and industry, often associated with concepts like greenhouse effect, photosynthesis, and carbon neutrality.

Examples

  • 1 植物通过光合作用吸收二氧化碳并释放氧气。 (Plants absorb carbon dioxide and release oxygen through photosynthesis.)
  • 2 减少二氧化碳排放是应对全球变暖的关键措施。 (Reducing carbon dioxide emissions is a key measure to address global warming.)
  • 3 实验室里常用二氧化碳灭火器来扑灭电器火灾。 (Carbon dioxide fire extinguishers are often used in laboratories to extinguish electrical fires.)
  • 4 碳酸饮料中的二氧化碳使饮料产生气泡。 (The carbon dioxide in carbonated drinks creates bubbles.)
  • 5 人类和动物的呼吸作用会产生二氧化碳。 (The respiration of humans and animals produces carbon dioxide.)

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