A hard, smooth, usually round, iridescent mass, typically white or bluish grey, formed of layers of calcium carbonate deposited around a foreign…
| 单词 | θ33194 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Pelecypoda or Conchifera > [noun] > bivalves > that produces pearls > pearl (3) pearlc1375 A hard, smooth, usually round, iridescent mass, typically white or bluish grey, formed of layers of calcium carbonate deposited around a foreign… pearlet1559 A small pearl. Subcategories:— substance (1) |
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