heat lightning
noun /ˈhiːt laɪtnɪŋ/
/ˈhiːt laɪtnɪŋ/
[uncountable] (North American English)- flashes of lightning without thunder, seen in the sky on hot nights
高温闪电：在炎热的夜晚在天空中看到的没有雷声的闪电 - Sometimes heat lightning can appear to be orange.
有时热闪电看起来是橙色的。
- Sometimes heat lightning can appear to be orange.