花瓣的钢筋结构采用了渐变颜色，只在边缘呈现出深色调。
Transitioned and graded colour is applied to the side of the petal ribs, creating a deep hue only at the edge of the structure.
图中火灾次数以渐变颜色表示，由绿色(低)至红色(高)。
The number of fires is presented in graduated colour, from green (lowest) to red (highest).
而该年交通意外总数由渐变颜色代表，从绿色至红色(少至多)。
The total number of road accidents is represented by graduated colour, from green to red (least to most).
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