易混淆的单词： Swans

The reason is unrealistic assumptions ignoring potential black swans .

原因是不切实际的假定忽略了可能存在的黑天鹅。

Swans can give you a nasty peck .

天鹅可能给你严重的一啄。

So why waste money trying to turn ducks into swans ?

所以为什么要浪费资金用于把鸭子培养成天鹅？

I don 't remember the swans in the park shaking their heads at me .

我不记得公园里的天鹅是否对着我晃动它们的头。

Such developments have been called " black swans " events of inconceivably tiny probability .

此类事件被称之为“黑天鹅”发生的可能性微乎其微的事件。