carbon dioxide; CO2; greenhouse gas
Tone colorsmāmámǎmàma
Meanings
1 sense · 4 examplesnoun
carbon dioxide (CO₂), a colorless, odorless gas heavier than air; a greenhouse gas produced by respiration and combustion, absorbed by plants during photosynthesis
Essential in the carbon cycle through photosynthesis and respiration. Formerly known as 碳酸气 (tàn suān qì). Major contributor to global warming when emitted in excess from industrial processes and burning fossil fuels.
Zhí植
wù物
tōng通
guò过
guāng光
hé合
zuò作
yòng用
xī吸
shōu收
èr二
yǎng氧
huà化
tàn碳
，
shì释
fàng放
yǎng氧
qì气
。
Plants absorb carbon dioxide and release oxygen through photosynthesis.
Wèi为
le了
jiǎn减
shǎo少
èr二
yǎng氧
huà化
tàn碳
pái排
fàng放
，
wǒ我
men们
yīng应
gāi该
duō多
shǐ使
yòng用
gōng公
gòng共
jiāo交
tōng通
。
To reduce carbon dioxide emissions, we should use public transportation more often.
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Zhè这
píng瓶
tàn碳
suān酸
yǐn饮
liào料
lǐ里
chōng充
mǎn满
le了
èr二
yǎng氧
huà化
tàn碳
qì气
tǐ体
。
This bottle of carbonated drink is filled with carbon dioxide gas.
Xiāo消
fáng防
yuán员
shǐ使
yòng用
èr二
yǎng氧
huà化
tàn碳
miè灭
huǒ火
qì器
lái来
pū扑
miè灭
diàn电
qì气
huǒ火
zāi灾
。
Firefighters use carbon dioxide fire extinguishers to put out electrical fires.