| 单词 | apterium |
| 释义 | apterium in British English (æpˈtɪərɪəm) noun ornithology a bare patch on the skin of a bird between the feathered pterylae apterium in American English (æpˈtɪriəm) nounWord forms: plural apˈteria (æpˈtɪriə) a bare area of skin between feather tracts on the body of a bird |
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