The " retro" part of retrovirus isn't referring to its style, but refers to it needing to use an enzyme called reverse transcriptase to transcribe a complementary double-stranded piece of " proviral" DNA.

逆转录病毒“retrovirus”中的“retro”并不是指复古风格，而是指它需要逆转录酶合成前病毒DNA的互补双链。