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....
All at once the men in advance stopped so suddenly that those following caromed against them.走在头里的人们突然站住了,弄得那些跟在后边的人猛的撞在他们身上.His drive hit a tree and caromed off into a roadway.他击出的球撞到一棵树上而反弹到路上.The car caromed off sever...
CONCLUSION: AOL has a good effect on the therapy of staphylococcus aureus conjunctivitis and cantharides tincture.结论: AOL对家兔金葡菌性结膜炎及刺激性结膜炎具有良好的疗效.While herbalists make dandelion into tincture, the leaves can be eaten raw...