根据不同的相，主支路和从支路的左拐信号灯在绿色和黄色信号灯之间选择来显示。
According to the different phase, the left-hand turn light of the master and slave branches choose to shows between green and yellow lights.
预警系统分2个级别，红色信号属I级，表示细菌性食物中毒概率大于25%，黄色信号属II级，表示中毒概率为15% - 25%。
A red alert will mean a 25% or more risk of bacterial food poisoning, while a yellow alert will warn of a 15%-24% possibility.
或许正因为如此，格拉汉姆才几乎不变地将其他人的狂热视为黄色的警示信号，而在别人的哀叹中却能看到希望之光。
Perhaps as a result, he almost invariably read the enthusiasm of others as a yellow caution light, and he took their misery as a sign of hope.
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