Praise the teacher's indifference to the children.
On the podium, cold comes and summer goes, spring, summer, autumn and winter, a little hard sowing; In the garden, helping the disabled and helping the weak, wind, frost, rain and snow gave birth to a new pavilion. Thank you, teacher! I wish you a happy Teacher's Day and happy every day! The teacher is a mountain, tall and straight, and the teacher is green; The teacher is an eagle, taking me off; The teacher is an umbrella to shelter us from the wind and rain.
explain
Cold refers to the feeling of fear of cold and cold climate; Low temperature, feeling cold; Generally used to describe winter. The cold weather in China is the result of frequent southward movement of Siberian cold air.
Siberia is the "cold pole" in the northern hemisphere, which makes China the coldest place at the same latitude in the world. Siberian cold air appears as a cold air mass heading south on the weather map. But the cold air mass is not isolated, it is often a part of a larger weather system-cyclones on the weather map.
Cyclones are mainly composed of a pair of cold and warm air masses, with a cold air mass in the west and a warm air mass in the east. This extratropical cyclone rotates counterclockwise and moves from west to east at the same time.
The dividing line between cold and warm air masses is called cold front. After the cold front, the local area changed from warm air mass to cold air mass, and the wind direction changed from south wind to north wind. This is the truth of the proverb "the south wind blows to the end, and the north wind returns the gift". So there will be a sharp cooling after the cold front.
Climatic characteristics
The climate of China is characterized by hot in the south and cold in the north, with a large temperature difference between the north and the south. The winter climate in northern China is cold for two reasons. First, the direct point of the sun in winter is located in the southern hemisphere. The farther north, the shorter the day, and the lower the height of the sun at noon, the less solar radiation energy is obtained.
In addition, the northern part of China is close to the source of cold air in winter "Asian high", which is obviously affected by cold air, and the temperature drop is more intense, and the winter is cold, which further embodies the characteristics of continental monsoon climate in China.
example
In the cold winter, the river changed its old excitement and seemed to fall asleep peacefully. In winter, everything has fallen asleep, but Snow Girl is tirelessly blowing the cold wind.
Autumn wind bursts, I am lonely as a fallen leaf; The spring breeze is very slow, and it is warm and cold at first sight, and there is no future in sight. More often, this word is used to express people's sense of loss, and they can't feel the warmth of family, lovers and friends.
Cold life is terrible, and a warm word can melt a cold heart. In fact, we don't want much, just a warm hug, and you haven't given enough.