在一块区域内重复出现的元素：色彩、线条、形状、明暗等。
The recurrence of elements within a piece: colours, lines, shapes, values, etc.
本戴制版法：用机械方法把网点或纹理图案转移到线条画上以产生明暗色调的效果。
Benday process: a method of mechanically transferring dots or texture patterns to produce tonal value in line drawings.
花黄色，但常有一系列明暗深浅的变化。花瓣上富于变化的棕红色线条，有时在蜜腺上部有一圈棕红色的斑点。
It has yellow flowers in various shades of yellow, with varying degrees of penciling or red-brown lines and sometimes with a red-brown circular blotch above the gland.
花黄色，但常有一系列明暗深浅的变化。花瓣上富于变化的棕红色线条，有时在蜜腺上部有一圈棕红色的斑点。
It has yellow flowers in various shades of yellow, with varying degrees of penciling or red-brown lines and sometimes with a red-brown circular blotch above the gland.
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