The chart briefly reflects the data about the machines that the whole nation mainly have.Several variation trends are
illustrated in the graph: the data of  the air degree changing machine  has the biggest change of 
approximately 70.7 , rising sharply from 75.2  in 2014 to 145.9  in 2023
, while the data of washing machine has a smaller increase from 83.7 to 98.2.
Obviously, what the chart tells us is that these three machines are more and more important in our daily lives.
Presumably, the following reasons should be able to explain it.
First and foremost, for the majority of individuals, air machine fulfills a specific necessity in their
daily lives, which is one of the factors contributing to the growing attention towards it.
In the second place,these three kinds of machines take huge role in our lives.No matter which city you live in,they are essensial to have a convenient life.
It is easy to conclude that over time, the focus on this phenomenon...