Because once you swapped your credit card, your 1 or 2-year membership fee has already paid to Yoga Zone in one lump sum.

因为一旦你换您的信用卡，您的1或2年的会员费已经支付到瑜珈开发区之一一笔。

youdao

The relatives of hers offered her a sum of money as her tuition fee.

亲戚们送给她一笔钱作为她的学费。

youdao

More importantly, when its hard-trained pilots have been poached by its competitors, an airline will be embarrassed by the problem of pilot shortage, which is more than a slim sum of transfer fee.

更为重要的是，辛辛苦苦培养的飞行员被竞争对手挖走后，自己却面临飞行员紧缺的问题，这不是一点转会费就能解决的。

youdao

However they're not pocketing all the cash themselves, with an undisclosed sum from the fee to be donated to the Claire House children's hospice in Cheshire -- where McLoughlin's disabled foster sister Rosie is cared for.

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Unlike selling packaged software for a lump sum or upgrade fee every year or two, when you sell a service month-to-month or year-to-year you have to keep delivering and reminding your customers that they are happy with the services you are providing.

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This would be incredibly stupid, like Netflix charging you a monthly fee and still making you pay a sum for each rental.

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