As we all know, when it’s cold, the birds fly to the southern; and when it turns warm, they come back. It is obviously that people can see variety of birds in some southern cities.
The sky outside is very dark and the wind blows the trees. The trees have to blend their back. There is no sun in the sky. It is two o’clock in the afternoon, but it look like the time of seven
The world meteorological day is on March 23, aims to let the people all around the world know about the meteorological organization and its main contribution to economic development and national defen