Offer a special deal, extra service or a lower price during your trial/introductory period.
在此期间提供优惠，额外的服务或者低价。
I highlighted the extra service charges in yellow.
我用黄色标示出额外的费用以便强调。
We also provide all Internet services free and seamless while still many hotels charge Internet as an extra service.
当还有很多酒店对上互联网额外收取服务费时，我们免费提供随时随地的上网服务。
Extended download service - Extra service for download products.
延长下载服务—可下载产品的附加服务。
Extended download service - Extra service for download products.
延长下载服务—可下载产品的附加服务。
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