Sitting is hazardous. It's dangerous.

久坐是有害的，是危险的。

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And although the dazzlers can be hazardous when misused, they're not nearly as dangerous as a M-16.

而且尽管眩目器使用不当可能危险，但它们可比不上m 16危险。

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Certification in workplace hazardous materials information system (WHMIS), transportation of dangerous goods (TDG), and courses in safety practices may be required.

可能需要具备工作场所有害物质信息系统WHMIS，危险货物运输t DG，和安全实践的课程认证。

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Rising floodwaters bring debris, hazardous waste and gas leaks, and force snakes or other potentially dangerous animals from their habitats and into residential areas.

CNN: Mississippi governor urges caution as river crests

Police described the incidents as "highly dangerous" as the vandals could have been electrocuted and had left the sites "hazardous to other people".

BBC: Scottish Borders A68 speed cameras attacked with saw