Afoul sliding tackle may also constitute misconduct, resulting in either yellow card (caution) or a red card (send off).

铲球犯规或许包含其它不当行为，导致判罚黄牌(警告)或者红牌(罚下)。

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Some organizations use color coding such as "Green" (for healthy), "Yellow" (for caution), and "Red" (for critical).

有些组织使用彩色编码，比如“Green”(表示健康的)，“Yellow”(表示小心)，以及“Red”(表示危险的)。

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Colour can also be used to convey specific meaning such as warning (red), caution (yellow), safety (green), etc.

颜色可能并且被使用表达具体意思譬如警告(红色)，小心(黄色)，安全(绿色)，等。

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As for the advice to simply quit her job, Bertrando issues a big red caution sign.

FORBES: Reddit Urges Employee to Quit Job, Collect Unemployment Benefits

It said it wanted a "traffic light" warning system for drugs - with green for those safe to take and drive, amber for caution and red signalling severe adverse effects which would dangerously impair driving.

BBC: You are in: UK