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即使电子邮件是免费的，人们还是会付费发短信。
People pay for text messages, even though E-mail is free.
youdao
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即使电子邮件是免费的，人们还是会付费发短信。
People pay for text messages, even though email is free.
youdao
-
即使电子邮件是免费的，人们还是会付费发短信。
People pay for text messages, even though email is free.
youdao