封住開口，東西進不出
最直接的一種：擋住的是空氣、水和味道。
adjective · B1
Closed or covered so tightly that there is no gap at all, so that air, water, dirt or smell cannot get in or out.
密封的
核心畫面
Picture wax pressed across the flap of a letter. The way in is not only shut, it is covered over, and nothing can pass that point without breaking it. Sealed takes that picture and puts it on anything with a way in: a jar has an opening, a room has an opening, a document has the opening of being read, a piece of code has the opening of being built on. Seal it and the way in is gone.
「可以想成一封信的封口被蠟壓住了。那個地方不只是關上，而是被蓋住了。要通過，就得先把蠟弄破。sealed 把這個畫面…更多收起
「可以想成一封信的封口被蠟壓住了。那個地方不只是關上，而是被蓋住了。要通過，就得先把蠟弄破。sealed 把這個畫面放到各種有「開口」的東西上。罐子有開口。房間有開口。一份文件的開口是「被人看見」。一段程式的開口是「被人接著寫下去」。封起來，那個開口就不見了。」Three branches
封住表面
把「蓋住」從容器移到地面，被封住的是路面本身。
adjective · B2
Used about a road: covered with a hard smooth surface such as asphalt, instead of being left as bare earth or loose stones.
鋪過柏油的（路）
封住內容，別人碰不到
被封住的不再是東西，而是「看」和「改」這兩個動作。
adjective · B2
Closed in a way that stops anyone reading or seeing what is inside, until the right person opens it or the right time comes.
彌封的／密封保管的
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
sealedadj/siːld/
- 1
Closed by a seal (something to prevent leakage).
- Now we are liberal with our innermost secrets, spraying them into the public ether with a generosity our forebears could not have imagined. Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet.
- 2
Preventing entrance.
- 3
Of a road: having an asphalt or macadamised surface.
- 4
Not subclassable; from which one cannot inherit.
這個拼法也被記錄為下列字的變化形：
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。