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The white cliffs of Dover, for example, are white because they contain limestone, or calcium carbonate.

比如，多佛的白色峭壁之所以为白色就是因为含有石灰岩或碳酸钙。

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Bleaching occurs when the tiny plant-like coral organisms die, often because of higher temperatures, and leave behind only a white limestone reef skeleton.

细小而形似植物的珊瑚生物死亡时会褪色变白，原因通常是不断升高的温度，留下的只是一具白色的石灰岩珊瑚礁骨架。

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Imagine the heat in the summer, the bitter cold in the winter, and Mandela going out to quarry stone, the burning white light reflecting off the limestone permanently and deeply injuring his sight.

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Touches such as earthy limestone, wooden archways, and black and white photos of Italian streetscapes will set the tone of the dining room.

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Stonework on the building was damaged by a 1977 sand-blasting which, while it turned a black building white, also took off the limestone's protective facing, swiftly turning it grey again.

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