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likely to injure or harm somebody, or to damage or destroy something 有危險的；引起危險的；不安全的 The situation is extremely dangerous. 情況極其危險。 Fog and ice are making the roads very dangerous. 霧和冰使得道路非常危險。 potentially dangerous levels of pesticides 殺蟲劑的潛在危險水平 It's one of the most dangerous places in the world. 這是世界上最危險的地方之一。 The prisoners who escaped are violent and dangerous. 這些逃犯殘暴而危險。 - (British English)
a conviction for dangerous driving 判危險駕駛罪 - dangerous for somebody
Poor air quality is particularly dangerous for young children. 空氣質量差對幼兒尤其危險。 - dangerous for somebody to do something
It would be dangerous for you to stay here. 你待在這兒不安全。 - dangerous to somebody/something
The evidence is clear that smoking is dangerous to health. 證據很清楚，吸煙有害健康。
Extra ExamplesTopics Dangera1, War and conflicta1, Working lifea1This route through the mountains is notoriously dangerous. 衆所周知，通過山區的那條路很危險。 Conditions have become difficult and dangerous. 情況變得困難和危險。 This treatment is extremely dangerous for the mother. 這種治療對（胎兒的）母親是極其危險的。 The substance is not dangerous to humans. 這種物質對人類沒有危險。 Flu can be a dangerous illness for some people, including the very young. 流感對包括幼兒在内的一些人來說可以是一種危險的疾病。 The plans would create more traffic and be dangerous for children and old people. 這些計劃會造成更多的交通堵塞，對兒童和老人都很危險。
Oxford Collocations Dictionaryverbs- be
- feel
- look
- …
- extremely
- fairly
- very
- …
- for
- to
likely to cause problems or have a bad result 有危險的；引起危險的；不安全的 This ruling sets a dangerous precedent. 這項裁決開創了一個危險的先例。 Raising income tax is considered politically dangerous. 據認爲，提高所得稅有政治風險。 - dangerous to do something
As always, it's dangerous to generalize. 像往常一樣，一概而論是危險的。
Word OriginMiddle English (in the senses ‘arrogant’, ‘fastidious’, and ‘difficult to please’): from Old French dangereus, from dangier, based on Latin dominus ‘lord’.
Idioms
a dangerous game
a situation in which somebody takes risks, usually hoping to gain an advantage 令人氣憤的場合（或話題）；危險處境 Both gangs are playing a very dangerous game. 兩個幫派都在玩一個非常危險的遊戲。
dangerous ground