信号工要确保井筒内无人,才能发送升降信号.Signal worker can't send hoisting signal until be ensure that no worker is in it.人员通行,必须通知信号工和卷扬工.It must be advised signal worker and winch operator when personnel is passing by....
Romance is making a comeback. Reality is out.浪漫主义正重新流行起来，而现实主义过时了。Sixties singing star Petula Clark is making a comeback.60年代的歌星佩杜拉·克拉克复出了。Gold jewellery and accessories are making a comeback , fuelled by classier design...