| 单词 | 上颚骨 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔antrum〕Either of the sinuses in the bones of the upper jaw, opening into the nasal cavity.鼻窦：上颚骨里通向鼻腔的窦道之一美国传统〔premaxilla〕Either of two bones located in front of and between the maxillary bones in the upper jaw of vertebrates.前颌骨：位于脊椎动物上颚的上颚骨之前和之间的两块骨头中的一块美国传统 |
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