中小企业使用e-mail的最初原因是为了与国外客户交流的方便.
The primary reason small and medium businesses use e-mails in the beginning was to communicate with their international clients more easily.
e-mail为国外游客挑选合适的宾馆提供了便利.
E-mails have provided much convenience to international tourists when they are choosing a suitable hotel for their travels.