WebThe orderly rewinding that is now needed will be very difficult to manage. 在某些情况下长时间工作可能是背部疼痛的主要原因,通常它变得非常 难以管理 的痛苦。. In some cases long working hours may be a major reason for back pain, and often it becomes very difficult to manage the pain. 最后,当地居民和 ...