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What is the safest interpretation of the red areas around the truck in this diagram?
对图中卡车周围红色区域，怎样理解最有助于安全？
The red areas illustrate possible blind spots around the truck; avoid staying there.
它们示意卡车前、后及两侧可能存在盲区，应避免停留其中。
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Their exact extent varies with vehicle, mirrors and conditions. Seeing the truck does not prove its driver sees you. Keep clear, particularly of its left-side blind area.
这是一幅示意图，不能保证所有车型、后视镜设置和现场条件下的盲区范围完全相同。不要认为能看见卡车就代表司机一定能看见你；应保持距离，尤其避免在左侧盲区并行。