![Theideathatredmeansstopandgreenmeanshasinfluencedourliv...]( "Theideathatredmeansstopandgreenmeanshasinfluencedourliv...")
- 問題詳情：Theideathatredmeansstopandgreenmeanshasinfluencedourlivesinmorewaysthanjusttrafficsignals(信號).Wehavebeentaughtfromayoungagethatthecolorredmeansdangerandgreenmeansit'sokaytomoveforward.Butwhywerethosecolorschosenfortrafficlightsinthefirstpl...
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