名詞 limestone:

1. a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

1. First, ore is mixed with coke and limestone.
   先把鐵礦石和焦碳、石灰石混合在一起。
2. The limestone absorb impurity from the ore and form a fluid slag which floats on the surface of the heavier molten iron.
   石灰石吸咐了鐵礦石中的雜質(zhì)，形成浮在較重的鐵水表面上的流動(dòng)渣。
3. Limestone cliffs; limestone walls.
   石灰?guī)r峭壁; 石灰?guī)r墻
4. We may burn limestone to obtain lime.
   我們可以通過(guò)燒石灰石來(lái)得到石灰。

lime.stone

n.（名詞）
A common sedimentary rock consisting mostly of calcium carbonate, CaCO3, used as a building stone and in the manufacture of lime, carbon dioxide, and cement.
石灰?guī)r：一種普通沉積巖，主要成分為碳酸鈣，CaCO3，用于建筑，并用于制造石灰、二氧化碳和水泥
n.attributive.（定語(yǔ)名詞）
Often used to modify another noun:
用于修飾另外的名詞：
例句：
limestone cliffs; limestone walls.
石灰?guī)r峭壁；石灰?guī)r墻