“立冬”和“立秋”一样,古人同样在这个季节用占卜的方法来看冬天的冷暖,如“立冬晴,一冬凌(寒冷;立冬阴(阴雨,一冬温(暖冬”。不无例外,古代也有到立冬这天,皇帝会亲自率领三公九卿大夫到北郊行"迎冬"之礼。
我国古代将立冬分为三候:"一候水始冰;二候地始冻;三候雉人大水为蜃。"此节气水已经能结成冰;土地也开始冻结;三候"雉人大水为蜃"中的雉即指野鸡一类的大鸟,蜃为大蛤。
立冬后,野鸡一类的大鸟便不多见了,而海边却可以看到外壳与野鸡的线条及颜色相似的大蛤。所以古人认为雉到立冬后便变成大蛤了。
立冬时节,太阳已到达黄经225°,北半球获得的太阳辐射量越来越少,由于此时地表夏半年贮存的热量还有一定的剩余,所以一般还不太冷。
晴朗无风之时,常有温暖舒适的“小阳春”天气,不仅十分宜人,对冬作物的生长也十分有利。但是,这时北方冷空气也已具有较强的势力,常频频南侵,有时形成大风、降温并伴有雨雪的寒潮天气。
Children's finally here, it is our holiday, but imagine the children also accompanied by together, everybody is more excited.
Children on this day, white clouds float over the blue sky, the children also have made a hot air balloon, they sit together on yourself a hot-air balloon, extremely happy! Balloon flying high, and finally flew to the sky, the children are in the sky holiday, the children sit on clouds, umpa jump, like a frisky little monkey.
Playing children, suddenly to rain cats and dogs, the children of the balloon has stalled, baiyun sister swept away by the wind, the children fell into despair. Is a time of crisis, a group of dragonflies sister and sister flew caught the children, and the safety of the children to the ground.
On the ground, only butterflies woven into a rainbow "lei", the children wear a wreath, some like a fairy, some like a warrior.
Play tired, the children fell asleep between full of fragrance of flowers.
Children's good play my imagination, to one day be able to live in such a children's day.
Sometimes I dream about life in the future. What will it be?
Perhaps some people will go to the moon for a holiday or even live on the moon,and some scientists will build cities under the sea to make people live there. We can have a medical examination or do some shopping without leaving our homes,which makes the life more convenient. Maybe we will also do some shopping and work at home.
And I'm sure there'll be more educational programmes on the radio or TV or by the Intemet or videophones,so perhaps some children won't need to go to school every day. They'll study at home.
In the future,all electric equipment at home is under the con-trol of computers. People can learn about the situation of the house by working on the computer at the office. No people like doing housework. Maybe each family will have a robot. Every day we can tell the robot what to do-shopping,housework and so on. believe the dream will come true some day.
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