| 单词 | lever-board |
| 释义 | > as lemmaslever-board lever-board n. (see quot.). ΚΠ 1823 P. Nicholson New Pract. Builder 587 Lever-boards, a set of boards, parallel to each other, so connected together that they may be turned to any angle, for the admission of more or less air or light; or so as to lap upon each other and exclude both. < as lemmas |
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