"To bell the cat" means to take an action that is risky.
“给猫系上铃铛”的意思是采取冒险的行动。
Putting animal organs into humans is a risk to public health.
就公众健康而言，把动物的器官移植给人类是一种冒险的行动。
(of acts or behaviour)involving danger; risky
（指行动或行为）有危险的,冒险的.
An adventurer who engages in a private military action in a foreign country.
军事冒险家在国外从事秘密军事行动的冒险者
An extended adventurous voyage or trip
冒险旅行一次大范围的或冒险的旅行
Any action or situation involving serious and unpredictable risks
严重而不可预测的冒险行动或情况
Yawned his disapproval of the silly venture.
对那愚蠢的冒险行动表示意兴阑珊
We will take a chance on the weather and hold the sports meeting.
我们将冒天气的险举行运动会。
He is to be our companion in tonight's adventure.
他就要成为我们今晚冒险行动的伙伴。
An undertaking or enterprise of a hazardous nature.
冒险活动，冒险经历具有冒险性的任务或计划
skydiving is a hazardous sport; extremely risky going out in the tide and fog; a venturesome journey in wintertime; a venturous enterprise.
跳伞是一项冒险的运动；在涨潮及有雾时外出是极端冒险的；冬季冒险旅行；大胆的计划。
RISK-TAKING BEHAVIORS IN DYNAMIC CONDITION WITH COMPUTER SIMULATION;
风险情景中不同成就动机者的冒险行为特征
The sending of soldiers to the rebellious island was a calculated risk.
派兵到发生叛乱的那个岛上是值得的冒险行动。
Eisenhower himself knew the riskiness of overlord
艾森豪威尔本人知道"霸王"行动的冒险性。
Your team can not go out at night. You are not safe.
你的分队不能在晚上行动，这样太冒险了。
an audacious mountain climber
敢于冒险的登山运动员
Disposed to engage in risky activities or enterprises.
爱冒险的乐于参加冒险性活动或事业的
Why didn't you come in on the venture?
你为什么不参加那项冒险行动?