The term &quot。fiftieth&quot。in English is pronounced [&#712。f&#618。fti&#618。θ].It refers to the fiftieth in a series or the fiftieth anniversary of an event.For example： &quot。The foundations grew quickly during the nineteen forties and fifties.&quot。This sentence describes the growth occurring in the 1940s and 1950s.Phrases such as &quot。