| 单词 | 密封物 |
| 释义 | 〔cap〕A protective cover or seal, especially one that closes off an end or a tip:帽状物，盖子：保护性的遮盖或密封物，尤其是关闭一头或一端的这类物品：〔shellac〕A purified lac in the form of thin yellow or orange flakes, often bleached white and widely used in varnishes, paints, inks, sealants, and formerly in phonograph records.虫胶：以薄的黄色或橙色薄片形式提取出来的纯紫胶，常被漂白并广泛用于漆、油漆、墨水、密封物及早期的留声机唱片 |
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