risky       
adjective uk/ˈrɪs.ki/ us/ˈrɪs.ki/
B2 危险的;有风险的
involving the possibility of something bad happening
  It's risky to buy a car without some good advice. 不好好听取别人的建议就买车是件冒险的事情。 
 We shouldn't go there. It's too risky. 我们不应该去那里,太危险了。 
 Teenagers often engage in risky behaviour. 青少年往往会有危险行为。 
 risky investments 有风险的投资 
 Synonyms: hazardoushigh-risk
 - More examples
 - The surgeon felt that the operation was too risky.
 - Many investors blamed the government for not warning them against risky investments.
 - He made huge profits on a number of very risky investments.
 - The general decided it was too risky to proceed any further.
 - The therapy can be risky in certain conditions.