1, nationwide, is this an anomaly? Hot and humid. summer
The whole country was sweltering that summer.
2. What is the air? It's sultry, and there may be a storm later.
The air is hot and humid. I'm afraid there will be a storm soon.
3. When summer comes? Hot and humid. On summer nights, we can cheer when we smell the right smell.
When hot summer and sultry summer nights come, it is timely to smell the smell that can refresh us.
What's the weather like at this time of year? Hot and humid. It's depressing
At this time of year, the weather will be stuffy and hot.
Hazards of extreme heat:
The effects of high temperature and sultry weather on human health are mainly heatstroke and cardiovascular and cerebrovascular diseases, which lead to danger. Under the action of excessive ambient temperature, the thermoregulation mechanism temporarily fails, leading to heat accumulation in the body and heatstroke. According to symptoms and degrees, heatstroke can be divided into heatstroke, which is the mildest manifestation and the most common.
Thermal radiation refers to long-term work in a high temperature environment, which leads to vasodilation and congestion of the lower limbs, leading to fainting; Heatstroke is caused by long-term exposure, which leads to perspiration dysfunction. For patients with hypertension and cardiovascular and cerebrovascular diseases, in the environment of high temperature, humidity, no wind and low pressure, human perspiration is inhibited, heat storage in the body increases, and myocardial oxygen consumption increases, which makes the cardiovascular system in a state of tension.
The sweltering heat can also lead to the dilation of human blood vessels and the increase of blood viscosity, which is prone to symptoms such as cerebral hemorrhage and myocardial infarction, and may cause great harm in severe cases. According to the investigation of cardiovascular and cerebrovascular diseases in Beijing, it is found that hot and humid weather is a dangerous weather that leads to ischemic stroke.