something that is dangerous and likely to cause damage

a health/fire hazard 健康／火灾隐患

The busy traffic entrance was a hazard to pedestrians. 那个繁忙的车辆入口处对行人来说很不安全。

to risk doing something, especially making a guess, suggestion, etc.

I wouldn't like to hazard a guess. 我不想冒险猜测。

to risk doing something that might cause harm to someone or something else

The policy hazarded the islands and put the lives of the inhabitants at risk. 这项政策将这些岛屿和岛上的居民置于了危险的境地。