the possibility of something bad happening

In this business, the risks and the rewards are high. 这个行业的风险和回报都很高。

There's a high risk of another accident happening in this fog. 这样大的雾，很有可能再次出事故。

[ + (that) ] The risk (that) we might fail made us work twice as hard. 我们可能会失败，这种忧患意识使得我们加倍努力工作。

[ + -ing verb ] It's always a risk starting up a new business. 创立一家新公司总是有风险的。

The company is quite a good risk (= safe to lend money to). 贷款给这家公司风险很小。

We want clean rivers and lakes, where you can swim without risk to your health. 我们需要干净清洁的河流湖泊，使我们游泳时不会危及健康。

It's a low/high-risk strategy (= one that is safe/not safe). 这种策略风险很低／高。

something bad that might happen

This wire is a safety/fire risk. 这根电线是个安全／火灾隐患。

His employers thought he was a security risk (= he might tell their secrets to a competitor). 雇主认为他是个会泄露商业机密的危险分子。

in a dangerous situation

at risk of All houses within 100 metres of the seas are at risk of flooding. 所有离海岸不足100米的房子都有被洪水袭击的危险。

The research shows that people who are exposed to very loud noise in the course of their work are at risk of hearing loss.

Unless food reaches them soon, these people are at risk of starvation.

The alarming truth is that a quarter of the world's wild mammal species are now at risk of extinction.

Health officials have been accused of unnecessarily putting lives at risk.

They failed to deal with the radioactive waste and, in so doing, put people's lives at risk.

The recession has put many jobs at risk.

used to mean that you are responsible for any damage, loss, or difficulty

Drivers are reminded that they leave their cars here at their own risk. 车主受到提示说在此停车风险自负。

No lifeguards in attendance. Swim at your own risk.

There was a sign pasted to the door of the boarded-up house that read 'Enter at your own risk'.

Clients who use these services do so at their own risk.

People must know that they dive in these waters at their own risk.

These trails are not maintained. Proceed at your own risk.

to do something that might be dangerous

Don't take any risks - just call the police. 不要冒险行事——给警察打电话吧。

You're taking a big risk if oil prices drop sharply. 如果油价下跌，你就会冒上很大的风险。

If things don't go my way I might lose a lot of money and I'm not willing to take that risk.

They're financially very secure and can afford to take a few risks.

If they propose anything remotely radical, they run the risk of alienating their core supporters.

Actors who speak out on political issues run the risk of losing fans.

at the risk of doing somethingidiom （表示自己说的话可能造成冒犯或听起来很蠢）冒着…的风险

run the risk of doing somethingidiom 冒…的危险;冒险做…

to do something although there is a chance of a bad result

"It's dangerous to cross here." "I'll just have to risk it." “从这儿穿行很危险。”“我不得不冒这个险。”

[ + -ing verb ] He risked losing his house when his company went bankrupt. 他的公司破产时，他差点连自己家的房子都保不住了。

If you risk something important, you cause it to be in a dangerous situation where you might lose it.

I'm not risking my life (informal neck) in that old car. 我不会拿我的性命冒险去坐那辆旧车。

He risked life and limb to get the cat down from the tree. 他冒着生命危险爬到树上去把猫救下来。

She was prepared to risk everything on a last throw of the dice. 她准备不惜牺牲一切，作最后的一搏。