Finally, there were several traders with whom I explored the possibility of an interview, but it never materialized.

最后，还有几位交易者，我想和他们面谈，但都没实现。

youdao

No one is entirely sure why the vaccine caused guillain-barre syndrome, but it affected more than 500 people and killed about 25. (the feared swine flu epidemic never materialized that year.)

至于为什么疫苗会导致格林·巴利综合症，目前无人能完全说清楚，但不可否认的是，超过500人都患上了这一疾病，有25人甚至丢了性命(与此同时，猪流感却并未像人们所担心的那样大肆流行)。

youdao

That is the kind of story that has defined the most famous initial public offerings of Silicon Valley, but it never materialized for Facebook, perhaps the most well-known tech IPO of all.

FORBES: Facebook's IPO Pop Is Finally Here Five Months Later

But in this case the bump never materialized, so it's back on the list.

FORBES: Magazine Article

Byetta is a twice-a-day shot, a big disadvantage, but it actually helps patients lose a few pounds, a hoped-for advantage that never materialized for the Merck and Novartis drugs.

FORBES: Magazine Article