A:Here is your tax-refund form. Please keep it.Sir. 这是您的退税单。请保存好，先生。 B:What for? 干什么用？ A:You can draw back the tax paid at the customs with this form. 你开业凭这张表格在海关取回所付税款。 B:Oh,I see.Thank you! 哦，明白了，谢谢你！