What should I say if I want to ask for permission informally?

如果我想非正式地请求许可,我该说什么?

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If in doubt, contact the author or copyright owner and ask for permission.

如有疑问, 请联系作者或版权拥有人,并要求许可.

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I need to call my dad and ask for permission before we go out.

我们出去之前,我得给我爸打个电话征得他的同意.

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