materializes , materializing , materialized
If a possible or expected event does not materialize, it does not happen.
A rebellion by radicals failed to materialize.
激进分子的一次叛乱未能实现。
If a person or thing materializes, they suddenly appear, after they have been invisible or in another place.
A moment later Jane materialized, coming in the front door.
过了一会儿,简突然出现了,从前门进来。