在英语中，"今天冷了"可以用以下几种表达方式来表示：
It's cold today.
这是一种最常用的表达方式。"It's"是"it is"的缩写，表示"它是"，而"cold"是形容词，表示"冷的"。
例句：
It's really cold today. I need to wear a coat.
I can't bepeve it's so cold today. I thought it was supposed to be warmer.
The weather is cold today.
这种表达方式强调的是"今天的天气"，而不是"今天的温度"。"The weather"是不可数名词，表示"天气"，而"cold"同样是形容词，表示"冷的"。
例句：
The weather is really cold today. I need to wear a coat.
I can't bepeve the weather is so cold today. I thought it was supposed to be warmer.
It's chilly today.
"Chilly"是形容词，意思是"寒冷的，有点冷的"。它比"cold"稍微宽松一些，通常用来描述较轻微的寒冷。
例句：
It's a bit chilly today. I need to wear a sweater.
The air is chilly today. I can see my breath.
总的来说，"今天冷了"这个概念在英语中有很多不同的表达方式，你可以根据自己的喜好来选择合适的表达方式。
It's cold today.
这是一种最常用的表达方式。"It's"是"it is"的缩写，表示"它是"，而"cold"是形容词，表示"冷的"。
例句：
It's really cold today. I need to wear a coat.
I can't bepeve it's so cold today. I thought it was supposed to be warmer.
The weather is cold today.
这种表达方式强调的是"今天的天气"，而不是"今天的温度"。"The weather"是不可数名词，表示"天气"，而"cold"同样是形容词，表示"冷的"。
例句：
The weather is really cold today. I need to wear a coat.
I can't bepeve the weather is so cold today. I thought it was supposed to be warmer.
It's chilly today.
"Chilly"是形容词，意思是"寒冷的，有点冷的"。它比"cold"稍微宽松一些，通常用来描述较轻微的寒冷。
例句：
It's a bit chilly today. I need to wear a sweater.
The air is chilly today. I can see my breath.
总的来说，"今天冷了"这个概念在英语中有很多不同的表达方式，你可以根据自己的喜好来选择合适的表达方式。