以下为句子列表：
英文: By providing the clock round services, these centers and stores have helped to improve the after sale product support, and have played a very important role in respect of flight safety and regularity.
中文: 从而有效地改进了产品的售后服务工作，同时对保证航空公司的飞机安全正常飞行，也起到了积极的作用。
更详细...
英文: Night shift workers get used to sleep the clock round on weekends.
中文: 轮夜班的工人，周末常不分昼夜地睡。
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