carbon dioxide

英 [ˌkɑːbən daɪˈɒksaɪd]

美 [ˌkɑːrbən daɪˈɑːksaɪd]

n.  二氧化碳

TOEFL化学

Collins.2

牛津词典

noun

• 二氧化碳
  a gas breathed out by people and animals from the lungs or produced by burning carbon

柯林斯词典

• 二氧化碳
  Carbon dioxideis a gas. It is produced by animals and people breathing out, and by chemical reactions.

英英释义

noun

• a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances
  Synonym:CO2carbonic acid gas

双语例句

• The proposed initiative would mandate a reduction of carbon dioxide of 40%
  倡议将强制规定把二氧化碳排放量降低40%。
• Oxygen and carbon dioxide from the air enter through the stoma.
  氧和二氧化碳从空气中进入气孔。
• The amount of carbon dioxide released by human activities such as burning coal and oil is small in comparison
  相比之下，人类活动燃烧煤、石油等所释放的二氧化碳要少一些。
• The fermentation of sugar to alcohol and the production of lime and sodium phosphate also generate carbon dioxide.
  糖发酵成酒精和石灰和磷酸钠的生产也产生二氧化碳。
• Industrialized countries must reduce carbon dioxide emissions.
  工业化国家必须减少二氧化碳的排放。
• Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide
  火星的大气层极其稀薄，几乎全部由二氧化碳构成。
• Dissolved carbon dioxide makes the water more acidic.
  二氧化碳溶解后能使水的酸性增加。
• Carbon is an element, while carbon dioxide is a compound.
  碳是一种（化学）元素，而二氧化碳则是一种化合物。
• The lime water has turned cloudy, therefore carbon dioxide has been produced during the experiment.
  石灰水变得混浊了，可见在实验中有二氧化碳生成了。
• Plants and trees filter carbon dioxide out of the air and produce oxygen.
  花草树木会过滤掉空气中的二氧化碳并制造氧气。