billing (关于外方服务协议)? 1. 付费 费率/付费代号/付费级别(不同人所付费用不同,如提供服务的工程师和工人每日费率不同)? 2.part of the services is subject to a call off by company through the use of call off work order which shall be submitted to swa at company’s sole discretion and option. an estimate for the cost involved with the call off work is included in the maximum budget figure. call off本意是“取消”,但如果是这样,最后一句中的“取消工作”怎么会有估计费用呢? 查看更多