Black Swan Events.

黑天鹅事件就指那些极小概率，但是有极大影响事件。

youdao

He advocates building a society that can limit the damage of Black Swan events once they inevitably occur.

他主张构建这样一个社会：一旦黑天鹅事件不可避免的发生，它能限制其造成的损失。

youdao

In 2007, he published the Black Swan: the Impact of the Highly Improbable, which argues that we should never ignore the possibility or importance of rare, unpredictable events.

在2007年，他出版了《黑天鹅：高度意外性事件的影响》，主张人们不应该忽略罕见和不可预测事件的可能性和重要性。

youdao

Downside Protection is also an essential element in the construction of a portfolio designed to withstand Black Swan events.

FORBES: Building A Portfolio To Withstand Storms And Cliffs

Almost every institution said they are or will soon be offering a product to guard against black swan events or tail risk.

FORBES: Wall Street's Black Swan Copycats

Every major and minor business publication is writing about Black Swan events.

FORBES: Praying For A Black Swan