materialize

1. V-I If a possible or expected event does not materialize, it does not happen. 实现[usu with brd-neg]

A rebellion by radicals failed to materialize. 激进分子的一次叛乱未能实现。

2. V-I If a person or thing materializes, they suddenly appear, after they have been invisible or in another place. 突然出现

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。