单词 | lever-bridge |
释义 | > as lemmaslever-bridge lever-bridge n. (see quot.). ΚΠ 1853 H. Douglas Ess. Mil. Bridges (ed. 3) vii. 312 That which is called a Lever Bridge is made by cutting down trees, and sinking the buts of them in the bank on each side sufficiently deep that the parts which are buried may exceed in weight those which are out of the ground. < as lemmas |
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