Studies have shown that the water-conducting and gas-exchanging functions of plant leaf edges are not as good as those of the middle parts of the leaves. Take an open-air tropical plant Alocasia as an example, the leaf diameter of which can reach 1 meter. The high temperature of 8.8 degrees Celsius caused some high-temperature burns on the edges of the leaves to "dry up". Therefore, scientists believe that this phenomenon limits the continued expansion of the leaf area, and of course, there are fewer giant leaf plants in nature. Can it be launched from this? ['Foliate leaves are not as large as tropical leaves.', 'Arum leaves grown in greenhouses are larger than tropical open air.', 'Reduced water-conducting and gas-exchanging functions of plant leaves will inhibit heat dissipation.', 'Plants often have smaller leaves when it rains in winter than in the rain.']