Apologize for any inconvenience caused during building operation 对施工期间带来的不便表示歉意。
Danger of death. Keep out. 生命危险，严禁入内。
Danger，building site, keep out 工地危险，禁止入内。
Danger，evacuation 危险,请走开
Dangerous structure, this bridge is unsafe 危险结构，该桥不安全。
Hot work in progress 正在施工
No persons allowed beyond this point 任何人不许越过此处。
Safety footwear.穿安全靴
Safety helmets must be worn on this site 此工地必须戴安全帽。