| 释义 | | bherəg- To shine; bright, white. Oldest form *bherhxgibreve;‑, becoming *bherhxg‑ in centum languages.
 [Pokorny bherəg̑‑ 139.]bright, from Old English beorht, bright, from Germanic *berhtaz, bright."The white tree," the birch (also the ash). birch, birk, from Old English birc(e), birch, from Germanic *birkjōn‑;probably suffixed zero-grade form *bhrag-s‑.  fraxinella, from Latin fraxinus, ash tree.
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