把它關在裡面、不讓它出去
把注意力從「裡面有什麼」移到那道壁本身：東西正想往外衝，而你負責把它擋在線內。情緒和火勢都是這樣，看起來是控制，其實還是同一個「不讓它出去」的畫面。
contain (hold back feelings) · verb · B1
To hold back or control strong feelings such as anger or excitement.
忍住／壓抑
核心畫面
Picture a box with walls: what is inside stays inside, and the walls decide where the inside ends. Contain works from those walls in two directions — saying what is in there (a box, a book, a food), and holding something in that would otherwise get out (a feeling, a fire).
可以想成：一個有壁的箱子。裡面的東西留在裡面，那道壁決定了「裡面」到哪裡為止。contain 就從這道壁往兩邊用：一…更多收起
可以想成：一個有壁的箱子。裡面的東西留在裡面，那道壁決定了「裡面」到哪裡為止。contain 就從這道壁往兩邊用：一邊是說出裡面有什麼（箱子、書、食物），另一邊是把本來會跑出去的東西關住（情緒、火勢）。From the picture
數學：把面積或角圍起來
數學裡的線就是那道壁：幾條線把一塊面積或一個角圍在中間。這是最字面的一個用法——「壁」真的被畫了出來。
contain (form a boundary, maths) · verb · B1
In maths, if lines contain an area or angle, they form the sides around it.
圍成／構成
Also in this word
contain (hold inside) · verb · B1
To have something inside it, as a container or place does.
裝有／內含
contain (include content) · verb · B1
To have certain words, facts, or ideas in it, whether written or spoken.
包含／收錄
contain (have as an ingredient) · verb · B1
If a food, drink, or material contains a substance, that substance is in it.
含有
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。
containverb/kənˈteɪn/
- 1
To hold inside.
- The brown box contains three stacks of books.
- a spray bottle containing water.
- 2
To include as a part.
- Most of the meals they offer contain meat.
- Manganism has been known about since the 19th century, when miners exposed to ores containing manganese, a silvery metal, began to totter, slur their speech and behave like someone inebriated.
- 3
To put constraints upon; to restrain; to confine; to keep within bounds.
- I'm so excited, I can hardly contain myself!
- Fear not, my lord: we can contain ourselves.
- 4
mathematicssciencesTo have as an element or subset.
- A group contains a unique inverse for each of its elements.
- If that subgraph contains the vertex in question then it must be spanning.
- 5
obsoleteTo restrain desire; to live in continence or chastity.
- But if they cannot contain, let them marry.
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。