Behavioural specialists say that members who pay an up-front yearly fee go less frequently because they don't have a regular reminder of their commitment printed on their bank statements.
行为研究学家说，会员预付完年费后，就没了定期的银行帐单“任务”提醒，由此，他们去健身房锻炼的次数会少许多。
Most charge a significant up-front fee and an ongoing percentage of revenue.
大多数收取大量的前期费用和收入的持续的百分比。
Most charge a significant up-front fee and an ongoing percentage of revenue.
大多数收取大量的前期费用和收入的持续的百分比。
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