Daily Chinese Idiom Guessing Game
To emerge in an endless stream; to occur frequently without end.
层重复；穷尽。接连不断地出现，没有穷尽。
唐·韩愈《贞曜先生墓志铭》神施鬼设，间见层出。”《唐书·艺文志》历代盛衰，文章与时高下；然其变能百出，不可穷极，何其兴衰。”
New variants of the virus are emerging one after another.