2021-04-20 Humor, joke, episode Humor, joke, episode Small Humor, Big Humor - Michael Kerr 小ネタ・小噺って英語でなんて言うの? - DMM英会話なんてuKnow? happy, I'm glad, I'm pleased 英語で「嬉しい」を伝えるフレーズ16選 | "Happy"以外も覚えて使おう! | NexSeed Blog LSTN, Library Space Technology Network Home - LSTN TLE, Two Line Elemnents, 軌道計算 CelesTrak: Current NORAD Two-Line Element Sets https://www.space-track.org/#/favorites TLE Retriever