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With time and pressure from above, the many small ice grains joined and changed to larger crystals, and eventually the deeper crystals merged into a solid mass of ice.

在时间和压力的作用下，许多小冰粒结合到一起变成更大的 晶体，最终较底层的晶体合并成庞大而坚固的 冰块。

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Formerly a solid mass that melted and refroze at its edges, it is now thinner, more fractured, and so more liable to melt.

以前的冰块坚固结实，只是在边缘发生融化和再次冻结。现在冰层变薄，变脆，更易融化。

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The expected course of ovarian cysts varies with a woman's age, the size of the cyst, whether there is a family history of ovarian cysts, and whether the cyst is fluid-filled, appears to be a solid mass of tissue, or has both fluid and solid components.

CNN: What are the potential problems with ovarian cysts?

Devotees make their own by brewing tea and sugar with a flat, solid mass of yeasts and bacteria.

WSJ: High Tea Has a New Meaning

But unlike solid-mass tumors, glioblastomas have tiny tentacles that spread into the brain, making it impossible for a surgeon to remove every bit of the tumor.

FORBES: Taking on a Monster