"Warning Sign"is a single by American country music artist Eddie Rabbitt. Released in 1985, it was the third single from the album The Best Year of My Life.

1. The dark clouds were a warning sign of an approaching thunderstorm.
   烏云是即將來臨的雷暴的警告標(biāo)志。
2. The increase in temperature is a warning sign of a potential system failure.
   溫度的上升是潛在系統(tǒng)故障的警告標(biāo)志。