harbinger
🇺🇸
/ˈhɑːrbɪndʒər/
🇬🇧
/ˈhɑːbɪndʒə(r)/
something that shows something else is going to happen soon
The sudden drop in temperature was a harbinger of the coming winter.
氣溫的突然下降是即將到來的冬天的預兆。