They must be protected from electric shock and contact with hazardous live circuits.

必须能够防止电击以及接触危险的带电电路。

youdao

Live Telnet, FTP, rlogin, RSH, and related services, in particular, can be excused only very, very rarely; they're simply too hazardous.

特别值得一提的是，尽可能少使用实时的telnet、ftp、rlogin和rsh以及相关服务；它们实在是太危险了。

youdao

One is black carbon and the other is ozone, which is vital for blocking ultraviolet rays in the stratosphere but hazardous in the bits of the atmosphere where plants live and people have to breathe.

其一是黑碳，另一样是臭氧，后者对阻止平流层的紫外线起着至关重要的作用，但对大气中的植物和人类有害。

youdao

First, Latinos are significantly more likely to live near a hazardous-waste site than blacks or whites with comparable incomes.

ECONOMIST: Race and the environment

Incredibly, Detroit news station WXYZ-TV was interviewing the mayor of Warren, Michigan, about hazardous driving conditions and showing live footage of the road when the skier cruised past.

BBC: Car tows skier through Detroit suburb as news camera rolls