draw a diagonal
collocation画一条对角线
Draw a diagonal from one corner to the opposite corner.
从一个角到相对的角画一条对角线。
对角线
先理解核心含义，再看它在真实句子里的用法。
对角线
A straight line connecting two non-adjacent corners of a polygon.
In geometry class, we measured the length of the diagonal of a square.
在几何课上，我们测量了一个正方形的对角线的长度。
连接多边形不相邻顶点的线
A line joining non-adjacent vertices of a polygon.
形成或类似该线的任何事物
Anything forming or resembling such a line
The dress has a stylish cut that follows the diagonal of the fabric.
这件连衣裙的剪裁时尚，沿着布料的对角线方向。
The chessboard has diagonals of the same color.
棋盘上有相同颜色的对角线。
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画一条对角线
Draw a diagonal from one corner to the opposite corner.
从一个角到相对的角画一条对角线。
正方形的对角线
The diagonal of a square is longer than each of its sides.
正方形的对角线比它的每一边都长。
斜着切
Slice the carrots on the diagonal.
把胡萝卜斜着切。
沿对角线
The bishop moves along the diagonal.
象沿对角线移动。
按对角线方向
Lay the tiles on the diagonal for a different look.
把瓷砖按对角线方向铺设，会有不同的视觉效果。
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diagonal 的首字母 d 和尾字母 l 隔着整串字母连成一条斜线，正如对角线连接不相邻的顶点。
语域：neutral 常见场景：数学/几何教材、日常描述斜线的表达 作名词时通常用于数学或几何语境，属于中性偏正式；日常口语中表示斜线或斜向事物也比较常见。
与 diagonal /daɪˈæɡənl/ 从重读元音 /æ/ 到词尾相同的是 hexagonal /hɛkˈsæɡənəl/、pentagonal /ˌpenˈtæɡənəl/、octagonal /ɒkˈtæɡənəl/，它们都押韵。注意拼写相近但读音不同的词：polygon /ˈpɒlɪɡən/ 不以 /ɡənl/ 结尾，不押韵；diagnosis /ˌdaɪəɡˈnoʊsɪs/ 和 diagram /ˈdaɪəɡræm/ 都有 diag 开头，但元音和重音都与 diagonal 不同。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.