input tax credit是什么?

input tax credit是什么? 请问tax credit 确切的意思是什么 investment tax credit是什么意思 tax credit 的意思! 英语什么是input tax credits Tax taxable taxes with tax credit tax deduction和tax credit指什么? “make work pay” tax credit 英语高人帮下哈!tax credit 的意思! We doubled the child tax credit是什么意思 sales tax的相关解释还有output sales tax,input sales tax,谢谢 employer hiring state tax credit请问什么意思,