But new research by two American scientists has found that bad weather - or at least thunderstorms and hail - does seem to happen midweek far more often than it does at weekends, at least in summer.
两位美国科学家的最新研究表明，雷暴和冰雹这样的坏天气，往往发生在一周的中间时段，而不太可能发生在周末，至少在夏天如此。
Southern California faces more ferocious heat coupled to the threat of thunderstorms and lightning strikes that could ignite more desert wildfires.
加利福尼亚州临近佩尔布洛瑟姆的羚羊谷闪电与彩虹齐飞，蓝天与暮色呼应。 最近，南加州遭遇更加极端的酷热，同时受到雷雨电击的威胁，很有可能引发更多的沙漠森林大火。
Butt new research by two American scientists has found that bad weather - or at least thunderstorms and hail - does seem to happen midweek far more often than it does at weekends, at least in summer.
两位美国科学家的最新研究表明，雷暴和冰雹这样的坏天气，往往发生在一周的中间时段，而不太可能发生在周末，至少在夏天如此。
It's called "convection" and is the source of stereotypical fluffy cumulus clouds, as well as more powerful thunderstorms.
这叫作“对流”，是固有的蓬松的积云的源头，也是更强大的雷雨的来源。
The most dangerous part of the country is Florida due to its tropical climate. The state sees more thunderstorms and lightning than anywhere else in the U. s.
因为热带性气候的缘故，佛罗里达州是全美最容易发生雷击情况的危险地区。该州发生雷暴和闪电的频率要高于美国任何的一个地区。
The most dangerous part of the country is Florida due to its tropical climate. The state sees more thunderstorms and lightning than anywhere else in the U. s.
因为热带性气候的缘故，佛罗里达州是全美最容易发生雷击情况的危险地区。该州发生雷暴和闪电的频率要高于美国任何的一个地区。
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