東西忽然有了形體
這一支最貼近字面：material 加 -ize，變成物質。
verb · C1
To appear suddenly and strangely, so that there was nothing there a moment before and you did not see the person or thing arrive.
突然現身；憑空出現
核心畫面
One way to hold this word: something that had no body a second ago is suddenly standing there with one. You did not watch it arrive; it simply took shape. Both uses are that same moment, once for a thing you can see and once for a plan or a sum of money that had only been talked about.
可以想成：一秒前那裡什麼都沒有，下一秒東西就有了形體站在那裡。你沒看到它過來，它就是成形了。這個字的兩個用法都是同一…更多收起
可以想成：一秒前那裡什麼都沒有，下一秒東西就有了形體站在那裡。你沒看到它過來，它就是成形了。這個字的兩個用法都是同一個瞬間：一次用在看得見的東西上，一次用在本來只停留在嘴巴和紙上的計畫或錢上。From the word’s history
From material plus the verb ending -ize, so literally to make or become matter.
由 material（物質、材料）加上動詞字尾 -ize 構成，字面上就是「變成物質」。
Wiktionary entry materialize, etymology (packet evidence wikt:materialize:verb, source_ref kaikki:3f6f69a190036ae4:1363006480)
Two branches
講好的事變成真的
同一個成形的瞬間，只是成形的東西不是身體，而是一件被答應過的事。
verb · B2
If something that was expected or promised — a problem, an offer, money, a plan — materializes, it actually happens or actually arrives. It is used most often in the negative, to say the expected thing never came at all.
成真；真的發生