Exercises
来自Big Physics
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’.
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’.