mass noun
1
- activity requiring physical effort, carried out especially to sustain or improve health and fitness锻炼; 运动：
exercise improves your heart and lung power
锻炼能增强你的心肺功能
count noun loosening-up exercises.放松活动。
1.1
- count noun a task or activity set to practise or test a skill练习; 习题：
there are exercises at the end of each book to check comprehension.
每本书的后面都有测验理解力的习题。
1.2
- count noun a process or activity carried out for a specific purpose, especially one concerned with a specified area or skill训练：
an exercise in public relations.
公关训练。
1.3
- count noun（常作exercises）a military drill or training manoeuvre操练; 演习。
1.4
exercises
N. Amer. ceremonies〈北美〉仪式; 典礼：Bar Mitzvah exercises.
犹太男孩成人仪式。
2
- the use or application of a faculty, right, or process使用, 运用, 行使：
the exercise of authority.
权力的行使。
with obj.
1
- use or apply (a faculty, right, or process)使用; 行使; 运用：
control is exercised by the Board
控制权由董事会掌握
anyone receiving a suspect package should exercise extreme caution.
任何收到可疑包裹的人都应该特别小心。
2
- no obj. engage in physical activity to sustain or improve health and fitness; take exercise锻炼; 运动：
she still exercised every day.
她仍然每天进行锻炼。
2.1
- exert (part of the body) to promote or improve muscular strength锻炼（身体的某个部位）：
raise your knee to exercise the upper leg and hip muscles.
把腿抬起来以锻炼大腿和臀部肌肉。
2.2
- cause (an animal) to engage in exercise驯（动物）：
she exercised her dogs before breakfast.
她早饭前驯狗。
3
- occupy the thoughts of; worry or perplex使思前想后; 使不安; 使迷惑不解：
the knowledge that a larger margin was possible still exercised him.
得知有可能出现更大差额仍使他心神不定。
派生词
exercisable
adjectiveexerciser
noun词源
Middle English （in the sense 'application of a faculty, right, or process'）： via Old French from Latin exercitium, from exercere 'keep busy, practise', from ex- 'thoroughly'+arcere 'keep in or away'.