lime; quicklime; calcium oxide
Tone colorsmāmámǎmàma
Meanings
1 sense · 4 examplesnoun
lime (general term for calcium oxide and hydroxide); specifically quicklime
Technically includes both quicklime (生石灰, CaO) and slaked lime (熟石灰, Ca(OH)₂), though in common usage often refers specifically to quicklime. Widely used in construction (whitewashing walls), agriculture (soil treatment), and chemical industries.
Zhè这
miàn面
qiáng墙
shuā刷
le了
yī一
céng层
shí石
huī灰
，
kàn看
qǐ起
lái来
bái白
duō多
le了
。
This wall was whitewashed with a layer of lime, making it look much whiter.
Shēng生
shí石
huī灰
yù遇
shuǐ水
huì会
fā发
shēng生
huà化
xué学
fǎn反
yìng应
，
fàng放
chū出
dà大
liàng量
rè热
。
Quicklime undergoes a chemical reaction when it meets water, releasing a large amount of heat.
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Nóng农
mín民
men们
cháng常
yòng用
shí石
huī灰
lái来
gǎi改
liáng良
suān酸
xìng性
tǔ土
rǎng壤
。
Farmers often use lime to improve acidic soil.
Shí石
huī灰
shí石
shì是
shēng生
chǎn产
shí石
huī灰
de的
zhǔ主
yào要
yuán原
liào料
。
Limestone is the main raw material for producing lime.