Another symptom is a cough that produces yellow mucus and does not go away.

VOA: special.2010.06.23

Now if all we have to go on is just this semiotic system, it's going to be kind of hard to put up resistance to by the same token we'll say "yellow" means "pause," "green" means "go."

而从语义学角度分析，我们必须不能这么想,这样绿色自然就表示继续，黄色表示暂停“

耶鲁公开课 - 文学理论导论课程节选

When the South Korean defense ministry originally announced this exercise, its official said the American aircraft carrier would go into the Yellow Sea -- between the Korean peninsula and China.

VOA: standard.2010.07.26