常見例句用作名詞 (n.)It was invented by students Matthias Hahnen and Robert Doerr for a project at the University of Saarbruecken in southwest Germany.這是德國西南部薩爾布呂肯大學(xué)的學(xué)生哈南與多爾為學(xué)校一項研究計劃而發(fā)明的。 返回 Doerr