| 词汇 | Betula |
| 词根词缀 | 词源： genus of the birches, from L. betula "birch," from Gaul. betu- "bitumen" (cf. M.Ir. beithe "box tree," Welsh bedwen "birch tree"). According to Pliny, so called because the Gauls extracted tar from birches. Birch tar is still sold as an analgesic and stimulant and made into birch beer by the Pennsylvania Dutch. |
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