Question

ad infinitum

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ad in∙fi∙ni∙tum / ˌæd ɪnfəˈnaɪtəm ; ˌæd ɪnfəˈnaɪtəm /
◙adv [formal]
1. continuing without ever ending – often used humorously
• 无限地，无止境地〔常为幽默用法〕:
 »I have to explain A, then B, and C, and so on ad infinitum.
  我得解释 A，再 B，再 C，一直没完没了地解释下去。