danger的形容词形式和反义词

例句：

It's a very dangerous stretch of road.

这是一段非常危险的.路。

She was abducted by a dangerous psychopath.

她被一名危险的精神变态者劫持了。

Going into the projects alone is dangerous.

只身进入公房区是危险的。

Two casualties were airlifted to safety.

两名伤亡人员已空运到安全地区。

Firefighters led the survivors to safety.

消防队员把幸存者带到了安全的地方。

Safety standards have gone down the drain.

安全标准根本不管用了。