1980, named for teacher Ernö Rubik (born 1944) who patented it in Hungary in 1975.
updated on October 16, 2021
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。