May I have your full name?

我能知道您的全名吗？

You must leave your full name and contact details when you phone.

你打电话时必须留下自己的完整姓名及用于联络的详细资料。

I still couldn't spell my full name correctly.

我还是不能正确地拼出我自己的全名。

O: May i have his full name？

你可以告诉我他的全名吗？

C: His full name is Zhongren Sun.

C：他的全名叫孙仲仁。