科学上网名：Slack
Slack 是一个结合聊天群组、大规模工具集成、文件整合与统一搜索的工具。它将电子邮件、短信、Google Drives、Twitter、Trello、Asana、GitHub 等 65 种工具和服务整合到一个平台上。
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A single Xiyou VPN for China account for all devices.Xiyou VPN for China Various plan options: 1-week to 1-year
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