The system of flexible working hours allows workers to start and finish work whenever they want. But there are two requirements. First, all workers must be present for certain 「key」 times in day.
这种弹性工作时间制度允许员工可以根据自己的需要开始和结束工作。
It took 10 months to finish work on the roof, structure and electrics of the building, which was completed by the late architect to house his growing sculpture collection in 1970.