在英语中，"dangerous"是表示"有危险的"的形容词。这个词的来源可以追溯到中世纪拉丁语"dangerosus"，这个词由"danger"（危险）和"osus"（充满）两个词组成。
下面是一些用 "dangerous" 表示 "有危险的" 的例句，并提供了中文翻译：
It's dangerous to swim in the ocean at night. (夜间在海里游泳是危险的。)
The old bridge is dangerous and should be closed to the pubpc. (那座老桥很危险，应该对公众关闭。)
Playing with fire is dangerous and can cause serious injuries. (玩火很危险，可能会造成严重伤害。)
其他表示 "有危险的" 的形容词还有 "risky" 和 "hazardous"。例如：
It's risky to cpmb the mountain without proper equipment. (没有适当装备爬山是有风险的。)
Working with chemicals can be hazardous to your health. (接触化学品会对你的健康造成危害。)
下面是一些用 "dangerous" 表示 "有危险的" 的例句，并提供了中文翻译：
It's dangerous to swim in the ocean at night. (夜间在海里游泳是危险的。)
The old bridge is dangerous and should be closed to the pubpc. (那座老桥很危险，应该对公众关闭。)
Playing with fire is dangerous and can cause serious injuries. (玩火很危险，可能会造成严重伤害。)
其他表示 "有危险的" 的形容词还有 "risky" 和 "hazardous"。例如：
It's risky to cpmb the mountain without proper equipment. (没有适当装备爬山是有风险的。)
Working with chemicals can be hazardous to your health. (接触化学品会对你的健康造成危害。)