These abbreviations mean: EF, English first, English first education. It is a language learning institution established by bertil hult in 1965, with more than 30 language schools in 14 countries around the world. EF(EF- Two Fairy Tales) is a beautiful girl game released by minori Company, and the names of animations and other derivative works based on it. EF Oriental Alliance, one of the large-scale alliances of EVE eve online, was established in July 2007. When the Eastern Alliance was established, it was at the low point of FBP power. In the early days, there was only one star field in the cellar. I think what you said should be the second kind. Please adopt it.