会员同意在一周训练中，缺席一次课或未经允许缺课将额外付费。
They will agree on a weekly schedule and if the members miss a session or opt out of the program for unexcused reasons, they will have to pay.
某天一个陌生人会在未经你允许的情况下阅读你的电子邮件或浏览你访问过的网站。
Someday a stranger will read your e-mail without your permission or scan the websites you've visited.
未经允许不得打开机床电器防护门，勿要对机内系统文件进行更改或删除。 综。
Do not open the protection ( gates ) door of machine without permission. Do not change ordelete the system documents of the machine.
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