大部分结晶岩石都非常坚硬，但也有例外，最常见的就是玄武岩，它是一种火山岩浆凝固后的形态，内部充满了微小的气泡，因此也具有多孔渗水的特点。
Most crystalline rocks are much more solid; a common exception is basalt, a form of solidified volcanic lava, which is sometimes full of tiny bubbles that make it very porous.
在距内格里尔3.2公里外能找到该岛最佳浅滩潜水区，那里沿海岸线的岩石悬崖下有结晶水和珊瑚。
Some of the island's best snorkeling can be found two miles (3.2 kilometers) from Negril, where crystal water and coral reefs wait below the coastline's rocky cliffs.
科学家们从中找到了羟基，这是由含水岩浆结晶成岩石遗留下来的。
And they detected hydroxyl, the HO that's left behind when a rock crystallizes from magma containing water.
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