| 单词 | mountain beaver |
| 释义 | mountain beaver in British Englisha burrowing rodent, Aplodontia rufa, of W North America: family Aplodontidae mountain beaver in American Englishnoun a small, burrowing rodent, Aplodontia rufa, of the Pacific coastal region of North America, considered the most primitive living rodent Also called: sewellel Word origin [1880–85, Amer.]This word is first recorded in the period 1880–85. Other words that entered Englishat around the same time include: Chief of Staff, irredentist, quotation mark, rain check, regionalism |
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