石灰石的建筑紧密地搭靠着，就如书架上的书，很多屋顶成斜角，厚厚的门，生锈的铁栏杆阳台。

The limestone buildings were packed tight, like books on a shelf, many with pitched roofs, thick doors, and rusted iron verandas.

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进而为了使珊瑚虫有一个舒适和安全的住所，海藻为珊瑚虫提供了能够存活的建筑模块，从而造成了石灰岩来构建成礁结构。

In return for a cozy, safe place to live, the algae provide the building blocks polps need to survive and make limestone to build the reef structures.

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他也完全归属于雕刻家，他经常从废弃的建筑物里偷取石灰石，因为他太穷，买不起这些材料。

He longed so much to be a sculptor he would steal limestone from abandoned buildings because he was too poor to buy his own materials.

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