What is the statement that Bernoulli's principle?

Bernoulli's principle states that in a fluid flow, an increase in the fluid's velocity occurs simultaneously with a decrease in pressure or potential energy. Specifically, it implies that the total mechanical energy of the fluid remains constant along a streamline, which includes kinetic energy, potential energy due to elevation, and pressure energy. This principle is fundamental in various applications, such as in explaining how airplanes generate lift and how carburetors function.