| 单词 | roof of the mouth |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔labrum〕A lip or liplike structure, such as the one forming the roof of the mouth in insects.唇或唇状结构，例如昆虫的唇部分美国传统〔retroflex〕Linguistics Pronounced with the tip of the tongue turned back against the roof of the mouth.【语言学】 卷舌音的：将舌尖向后卷抵住口中硬腭而发音的美国传统 |
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