What do summer and summer mean?

"Twenty-four solar terms" said: "Summer is in the middle of June. Summer, summer, size, small at the beginning of the month, big in the month, and still hot today. "

The summer heat is the hottest time of the year. During the summer heat, the subtropical high raged, and the downward airflow prevailed in the subtropical high. The warm air mass from the equator sank, which aggravated the air temperature, which is also the reason for the hotter summer. At this time, due to the superposition of the warming effect of direct sunlight in the northern hemisphere, the great summer heat has become a difficult season in most parts of the country.

Speaking of the heat, I have to mention the dog days. The so-called crouching is to avoid the midsummer. From long summer to the third Geng Day in the future, it is the beginning of Furi, starting from July 20 18 17, and the first time is from July 17 to July 26.