The height of autumn usually refers to

A crisp autumn usually means that the sky is clear and high.

The word crisp in autumn is usually used to describe the sky and climate in autumn. In autumn, the days are getting shorter and shorter, the nights are getting longer and longer, the temperature is getting lower and lower, the weather is getting cooler and the air is getting fresher.

This is because after summer, the water vapor in the atmosphere decreases, the clouds in the sky become scarce, and the transparency of the sky is good, which makes the sky brighter, clearer and looks very high. So "crisp autumn" usually means that the sky is high and the clouds are light. In late autumn, the subtropical high moves southward, the warm and humid air flow weakens, and the air humidity decreases, so it is easy to see the clear weather in Wan Li.

High air in autumn means that the temperature is moderate, the humidity is low, the air is fresh, the sun is full, and it feels a little refreshing and cool. This kind of weather makes people feel happy, and it is also a good time for outdoor sports and tourism. Many people walk into nature in this season, breathing fresh and fragrant air, enjoying the warmth of sunshine and the beauty of nature.

The cool weather in autumn is suitable for all kinds of outdoor sports, such as mountaineering, camping and long-distance cycling. Exercise in such a climate can not only enhance physical fitness, but also breathe more fresh air, so that the body and mind can be relaxed and stretched. At the same time, crisp autumn is also a good time for hiking. With some dry food, you can walk into the embrace of nature and enjoy different beautiful scenery.

The significance of learning idioms:

Idioms are an important part of China traditional culture and the core of China language and culture. Learning idioms not only helps us to master the traditional culture of China, but also helps us to use the language more accurately, flexibly, vividly and richly, and can effectively express limited words with rich meanings.

Language is a tool for expressing ideas. Only by mastering the language can we express our thoughts accurately and flexibly, so as to communicate with others better. The accurate, flexible and vivid expression of idioms can make the ideas expressed more profound and concise, express our own ideas more accurately and make our language expression more powerful.