Many of the promised benefits to farmers of GM crops, including GM RR soy, have not materialized. On the other hand, unexpected problems have arisen.

包括抗草甘膦除草剂大豆在内的关于转基因作物对农民有益的许多允诺，并没有实现。另外以方面，出现了许多未预料的问题。

youdao

Fears of a major outbreak of swine flu during the annual Muslim pilgrimage to Mecca have not materialized, according to Saudi Health Minister Abdullah al-Rabeeah.

VOA: standard.2009.11.29

Some questioned whether the Indian buying will continue as strongly since some of it may have been in anticipation of possibly higher taxes on gold by the Indian government, which so far have not materialized.

FORBES: METALS OUTLOOK: Uncertain Outlook For Gold Next Week

The innovation initiative at SWIFT is now in that awkward phase of innovation when money has been invested but financial returns have not yet materialized.

FORBES: Bold Innovation In A Conventional Setting: Crowdsourcing at SWIFT

Very few people truly grasp the possibility that when they reach retirement, the assumptions they made about gains may not have materialized.

FORBES: How To Profit From The Fiscal Cliff