come into service
人文科学

        vi.begin to be used; begin tooperate and function as designed投入使用,投入运营:When did this elevator come into service?这台电梯是什么时候投入使用的?Three newsubway lines have come into service in Beijing toease traffic during and after the Olympic gaines.北京新开通了三条地......（本文共 232 字）     [阅读本文] >>