来试试一项DreamHost主导的名为“隐身邮件”的社会实验吧！
Enter a bare bones social experiment from DreamHost called Invisible Note.
该系统工作寿命长，性能可靠，安全性、隐身性指标高，运转经济，操作简便，有显著的经济效益和社会效益。
The invention uses general petrol engine, to work carrier on water and underwater, to condition the air, with long service life and high safety.
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