Peach (scientific name: almond): Rosaceae, peach. Small deciduous trees; The leaves are narrowly ovoid to lanceolate, with a length of 15cm and a width of 4cm, a slender top, fine teeth at the edge, dark green luster, and nectaries at the base of the leaves; The bark is dark gray, and cracks appear with age; Flowers are solitary, from light to dark pink or red, sometimes white, with short stalks and a diameter of 4 cm, and bloom in early spring; A nearly spherical drupe with hairy surface, edible pulp, orange-yellow with red stripes, 7.5 cm in diameter, deep pits and grooves in the core, and white seeds. It is a small deciduous tree with fruit as fruit. Flowers are visible and fruits are juicy. Can be eaten raw, peaches, canned peaches and so on. And nucleoli can also be eaten. The flesh is white and yellow, and there are many varieties of peaches. Generally, the skin is hairy, and the skin of nectarine is smooth. The fruit of "Flat Peach" is flat and discoid; "Peach" is an ornamental peach tree with many petal forms. Originally from China, it is widely cultivated in various provinces. It is cultivated all over the world.

Mathematics [English: Mathematics, derived from the ancient Greek μ θ η μ α (má th ē ma); Often abbreviated as math or maths], it is a discipline that studies concepts such as quantity, structure, change, space and information. Mathematics is a universal means for human beings to strictly describe the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. In this sense, mathematics belongs to formal science, not natural science. Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics. Mathematics plays an irreplaceable role in the development of human history and social life, and it is also an indispensable basic tool for studying and studying modern science and technology.