at risk

exposed to harm or danger

处境危险；遭受危险

23 million people in Africa are &B{at risk from} starvation.

非洲有2,300万人正处于饥饿的危险中。

at one's (own) risk

used to indicate that if harm befalls a person or their possessions through their actions, it is their own responsibility

自负责任，自负后果

they undertook the adventure at their own risk.

他们从事冒险活动，后果自负。

at the risk of doing something

although there is the possibility of something unpleasant resulting

冒（做某事）的危险

at the risk of boring people to tears, I repeat the most important rule in painting.

冒着使人厌烦得要死的风险，我重复了最重要的绘画规则。

at risk to oneself (或 something)

with the possibility of endangering oneself or something

在可能危及自己（或某事物）的情况下

he visited prisons at considerable risk to his health.

他冒着健康受损的极大危险去巡视监狱。

risk one's neck

put one's life in danger

冒生命危险

run the risk (或 run risks)

expose oneself to the possibility of something unpleasant occurring

冒…的危险

she preferred not to &B{run the risk of} encountering his sister.

她宁可不冒与他姐姐发生冲突的危险。

take a risk (或 take risks)

proceed in the knowledge that there is a chance of something unpleasant occurring

冒险

at risk 或 at-risk

Being endangered, as from exposure to disease or from a lack of parental or familial guidance and proper health care

处境危险，遭受危险：处于危险之中，如因疾病或缺少父母或家庭的教导及适当的医疗保健

at risk youth in the inner cities; at-risk groups of children not having received the vaccine.

市中心贫民区遭受危险的青少年；没有种植牛痘疫苗的处境危险的孩子