外祖母悖论（祖母悖论）的英文是什么?
问题描述：
外祖母悖论（祖母悖论）的英文是什么?
答
英文为【grandfather paradox】【The grandfather paradox】 is a proposed paradox of time travel first described by the science fiction writer René Barjavel in his 1943 book Le Voyageur Imprudent (Futur...