If an object materializes, it appears suddenly.突然出现
Suddenly a lorry appeared in front of her - it seemed to materialize out of nowhere.一辆卡车突然出现在她面前——好似是从地下冒出来的。
If an idea or hope materializes, it becomes real.实现,成为现实
She was promised a promotion but it never materialized.他们许诺会给她升职,但却从未兑现过。
Her hopes of becoming a painter never materialized.她当画家的愿望一直未实现。