| 单词 | frena |
| 释义 | frenum or fraenum /frēˈnəm/noun (pl freˈna or fraeˈna)A ligament restraining the motion of a part of the body ORIGIN: L frēnum a bridle frenˈulum noun (pl frenˈula) A small stiff hair on the hind wing of some insects, serving to bond hind and front wings during flight |
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