1731, from Medieval Latin rotarius "pertaining to wheels," from Latin rota "a wheel, a potter's wheel; wheel for torture," from PIE root *ret- "to run, to turn, to roll" (cognates: Sanskrit rathah "car, chariot;" Avestan ratho; Lithuanian ratas "wheel," ritu "I roll;" Old High German rad, German Rad, Dutch rad, Old Frisian reth, Old Saxon rath, Old Irish roth, Welsh rhod "carriage wheel"). The international service club (founded by Paul P. Harris in Chicago in 1905) so called from the practice of clubs entertaining in rotation. Hence Rotarian (1911).
雙語例句
1. A rotary telephone has a wheel with holes for each number.
轉(zhuǎn)盤式電話有個(gè)帶眼的輪子.
來自《簡明英漢詞典》
2. Invented in 1951, the rotary engine is a revolutionary concept in internal combustion.