一年中气温最高的一天将引发雷雨

今天，高温和潮湿天气将带来雷雨的威胁。

Original Title: Hottest day of the year to spark thunderstorms
Article Content:
Heat and humidity will bring the threat of thundery downpours today

Original article: https://www.bbc.com/weather/articles/cy76g8364xko