四边形外角的邻补角的对角即为此外角的内对角（内对角相对于四边形外角而言）。
海洋上大致水平方向的小波纹是表面流，图片右侧内波在海洋上划出了长长的对角线。
The tiny wrinkles running roughly horizontally across the ocean are surface waves. Internal waves paint long diagonal lines across the ocean on the right side of the image.
内的塑料杯成员复数，均匀分布的扩大两者之间的对角括号和加入法兰轴向和径向法兰内杯。
The plastic inner cup member has plural, evenly spaced diagonal braces extending between and joining the axial flange and the radial flange of the inner cup.
然后，判断每个矩形区域内的目标物边界是否包含手动选取的两个对角顶点，若不包含，则边界生长直至包含该对顶点；
At thes third step, for every rectangular, we check whether boundary include two apex which is selected at first step, if not included, then the boundary grow until that contains the apex.
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