此外，电脑驾驶也会比人驾驶更安全，它们会遵守规则，在危险的情况下，有更快的行动速度。

In addition, computers would also drive more safely than people—they would obey the rules and have quicker action times when in dangerous situations.

youdao

这伙人被认为是威胁国家安全的危险分子。

The group was considered to be a risk to national security.

《牛津词典》

BALPA 协会在它的声明中警告说，除非安全措施得到改善，否则旅行者的未来将十分危险。

In its statement the association, known as BALPA, warns that unless safety improves, travellers face a perilous future.

youdao

So things can be dangerous. But generally, if you're smart, I think it's a very safe place to live.

因此，危险还是存在的。但大多数情况下，只要你精明点，我认为那儿还是一个非常安全的居住地。

在上西区 - SpeakingMax英语口语达人