碳灰的英文：
n. carbon dust
n. 碳；复写纸
Carbonation is the combination of carbonate or bicarbonate ions with minerals
碳酸作用是碳酸根离子或重碳酸根离子与矿物的化合作用。
editmetallized carbon filament
金属化碳丝
Coke consists mainly of carbon.
焦炭的主要成分是碳。
The residue is progressively enriched in carbon.
残留部分愈来愈富含碳质。
On hydrolysis carbon dioxide is evolved.
水解时，放出二氧化碳。
n. 尘土；粉尘
v. 擦灰；掸去；撒
dusted the cookies with sugar;dust crops with fertilizer.
将饼撒上糖粉；把化肥撒在作物上
Dust sugar on to a cake.
将糖撒在糕点上。
The carriage left a trail of dust.
马车后扬起了一缕烟尘。
He dusted his trousers.
他掸掉裤子上的尘土。
She dusts every day.
她每天掸灰尘。