At a railway crossing not watched by any one, warning marks shall be set up at a certain distance from the crossing.
无人看守的铁路道口，应当在距道口一定距离处设置警示标志。
Article 27 warning lights, warning marks or safety protection facilities shall be set up at a crossing where a railway and a road intersects on a plane.
第二十七条铁路与道路平面交叉的道口，应当设置警示灯、警示标志或者安全防护设施。
Packages for toxic substances shall have conspicuous warning marks and warning specifications in Chinese.
有毒物品的包装必须有醒目的警示标识和中文警示说明。
There shall be the specialized personnel to supervise the maintenance or overhaul sites, and the corresponding warning marks shall be displayed.
维护、检修现场应当有专人监护，并设置警示标志。
There shall be the specialized personnel to supervise the maintenance or overhaul sites, and the corresponding warning marks shall be displayed.
维护、检修现场应当有专人监护，并设置警示标志。
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