Before the invent of fax machines and email, mail was the only way to send information.

在传真机和电子邮件发明以前，邮寄是发送信息的唯一途径。

youdao

Before the invent of fax machines and email, mail was the only way to send information.

在传真机和电子邮件发明以前，邮寄是发送信息的唯一途径。

youdao