Does Section 667.61, subdivisions (f) and (g) of the Criminal Code apply only once?

Defendant emphasizes the language of section 667.61, subdivisions (f) and (g) to argue that "[a] particular aggravating circumstance may be used only once, and a defendant who commits qualifying sex offenses against a single victim on a single occasion shall receive only a single sentence of 25 years to life . . . ." (Italics added.) Respondent does not directly answer this argument, but instead essentially relies on People v. Ervin, supra, 50 Cal.App.4th 259.