Exercises
来自Big Physics
Safin（讨论 | 贡献）2022年4月28日 (四) 14:53的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=exercises+etymology&newwindow=1&hl=en ref] Middle English (in the sense ‘application of…”的新页面）
Middle English (in the sense ‘application of a right’): via Old French from Latin exercitium, from exercere ‘keep busy, practise’, from ex- ‘thoroughly’ + arcere ‘keep in or away’.
