How often should I do exercise?
我应该多久运动一次？
I do not know how to exercise her ability to focus attention and spirit.
我不知道该如何锻炼她的注意力和精神集中能力。
How often do you exercise? I exercise twice a week.
你多久锻炼一次？我每周锻炼两次。
How can I exercise and will it do any good?
我该如何行使，并将它做什么好？
How can I exercise and will it do any good?
我该如何行使，并将它做什么好？
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