请问什么是subject to backup withholding?

请问什么是subject to backup withholding? 请问back to back是什么意思啊? subject to subject to 怎么翻译好?请问商务或法律上用语subject to怎么翻译好?例:Subject to the section 4 below.Subject to foregoing sentence. 请问subject在这句话中的意思?All charges are subject to change without prior notice. 请问什么是intercity Due to Due from（DTDF),银行会计相关吧?我在文件里看到RC Hierarchy,RC是什么,还有FX FCYUSD auto back to back, 什么是front to back L/C 请问一下work back to的意思 请问subject怎没读? be subject to subject to chan_gingmoods是什么意思 subject to chan_gingmoods是什么意思 subject to prior sale Subject to Change 歌词 SUBJECT TO CHANGE怎么样 the back to back Back to back back-to-back