| 单词 | quadrilateral |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔brig〕Nautical A two-masted sailing ship, square-rigged on both masts, carrying two or more headsails and a quadrilateral gaff sail or spanker aft of the mizzenmast.【航海】 双桅横帆船：有两根桅杆的帆船，每个桅杆上都有横帆，载有两个或更多的前帆和一个四边形的斜桁帆或在后桅的尾部装有后樯纵帆美国传统〔fore-and-aft rig〕A rig on a sailing ship that has quadrilateral and triangular sails set to the fore-and-aft line and that can be trimmed to leeward.纵帆装置：帆船上的装置，有安装在船头或船尾的三桅或四桅，且可调整到下风美国传统〔gaff-topsail〕A light triangular or quadrilateral sail set over a gaff.斜桁中帆：下缘张在斜桁上的三角形或四边形轻帆美国传统〔lugsail〕A quadrilateral sail that lacks a boom, has the foot larger than the head, and is bent to a yard hanging obliquely on the mast.斜桁四角帆：没有帆杠，脚比头大，斜挂在桅杆上的桁弯曲的一种平面四角帆美国传统〔mainsail〕A quadrilateral or triangular sail set from the after part of the mainmast on a fore-and-aft rigged vessel.主帆：在船头船尾都装有帆的帆船上装在桅后部的呈四角形或三角形的帆美国传统〔parietal bone〕Either of two large, irregularly quadrilateral bones between the frontal and occipital bones that together form the sides and top of the skull.顶骨：位于额骨和枕骨之间并与它们一起构成头骨的周边和顶部的两块大且不规则四边形骨中的任一块美国传统〔quadrilateral〕Squares and rectangles are quadrilaterals.正方形和长方形都是四边形。剑桥高阶〔quadrilateral〕The sheet of metal was cut into even quadrilateral shapes.金属片被切割成了大小相同的四边形。韦氏高阶〔regular〕A square is a regular quadrilateral.广场是个正四边形。剑桥高阶〔square〕Games Any of the quadrilateral spaces on a board, as in chess.【游戏】 方形：在象棋中，在棋盘上的正方形格子美国传统〔tetragon〕A four-sided polygon; a quadrilateral.四边形美国传统〔trapezium〕A quadrilateral having no parallel sides.没有平行边的四边形美国传统〔trapezoid〕A quadrilateral having two parallel sides.梯形：一个有两条平行边的四边形美国传统A square is a regular quadrilateral.正方形是个规则四边形。剑桥国际Squares and rectangles are quadrilaterals.正方形和长方形都是四边形。剑桥国际 |
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