v. 锻炼, 训练, 练习( exercise的现在分词 ); 锻炼（身体某部位）; 使焦虑; 发挥（作用）

n the activity of exerting your muscles in various ways to keep fit

v put to use

v carry out or practice; as of jobs and professions

v give a workout to

v do physical exercise

v learn by repetition