1·Yes, so there's two kinds of limestone caves.
是的，所以有两种石灰岩洞穴。
2·There is solid evidence that they lived in these caves, regardless of the cold.
有确凿的证据证明不管有多冷他们都住在这些洞穴里。
3·Pictures of this kind have been found on the walls of caves in France and Spain.
在法国和西班牙的洞穴墙壁上也发现过类似的照片。
4·With a little help from this carbonic acid, moving water forms most of the world's limestone caves.
在这种碳酸的帮助下，流动的水创造了世界上大部分的石灰岩洞穴。
5·Other known caves from the same geographical area and time period contain only paintings of plants.
同一地理区域和同一时期的其他已知洞穴中，只有有关植物的绘画。
1·The large limestone caves are also quarried for cement.
这些大石灰岩洞也用来开采水泥原料。
—— 《柯林斯英汉双解大词典》
2·For more than a century researchers have known the basics of how limestone caves form: a tiny fracture opens in the rock perhaps due to some internal stress and water begins percolating through it.
超过一个世纪以来，研究者就懂得石灰岩洞形成的基本原理：可能由于内部的压力，石头上出现了微小的裂缝，然后水开始渗透。
3·For more than a century, researchers have known the basics of how limestone caves form: a tiny fracture opens in the rock, perhaps due to some internal stress, and water begins percolating through it.
超过一个世纪以来，研究者就懂得石灰岩洞形成的基本原理：可能由于内部的压力，石头上出现了微小的裂缝，然后水开始渗透。
4·Kids love stuff like exploring caves or kangaroo parks.
孩子喜欢像探索岩洞或袋鼠公园之类的事物。
5·Indoors, radon levels are higher, with highest levels found in places such as mines, caves and water treatment facilities.
室内的氡水平较高，而矿山、岩洞和水处理设施等地方的氡水平最高。