Warnings are informative; they do not prevent a pattern from being deployed.
警告仅用于提供信息，它们不会阻止模式的部署。
Street signs in the United States follow a simple pattern of shapes and colors: Yellow triangles are cautionary, red octagons are imperatives, and green rectangles are informative.
在美国，街道上的标志牌采用了形状和颜色的简单组合模式，即黄色三角形表示警告，红色八角形表示强制，绿色长方形表示通告。
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