Both the Celsius and the Fahrenheit temperature scales are defined so that 100 degrees corresponds to the temperatures of two different familiar systems.
(Both the Celsius and the Fahrenheit temperature scales; are defined; so that 100 degrees corresponds to the temperatures of two different familiar systems) (100 degrees; corresponds; to the temperatures of two different familiar systems)
Both the Celsius and the Fahrenheit temperature scales 100 degrees
are defined corresponds
so that 100 degrees corresponds to the temperatures of two different familiar systems
to the temperatures of two different familiar systems