剩下、留存
還是同一個「沒有離開」的畫面，只是視角換成「用掉、拿走之後，誰還留著」——所以引申出「剩下」。
be left over · verb · B2
To still be there after other things have gone, been used, or been taken away.
剩下／留存
核心畫面
Think of everything around something changing or leaving, while this one thing simply stays put and stays as it was. remain is the act of NOT moving and NOT changing while the rest of the world shifts.
可以想成：周圍的一切都在變、都在離開，唯獨這一個東西原地不動、維持原樣。remain 的核心畫面比較像「別的都走了／…更多收起
可以想成：周圍的一切都在變、都在離開，唯獨這一個東西原地不動、維持原樣。remain 的核心畫面比較像「別的都走了／都變了，它還在那裡、還是老樣子」——重點不在於做了什麼，而在於沒有跟著改變、沒有跟著離開。From the picture
有待觀察（固定說法）
由「還沒被處理」再走一步：答案還沒揭曉，仍懸在那裡等時間給。
it remains to be seen · verb · B2
Used in the phrase 'it remains to be seen' to say we still do not know if something will happen or is true.
有待觀察
Also in this word
stay the same · verb · B2
To stay the same way as before, without changing.
保持／仍然
stay in place · verb · B2
To stay in one place and not move away from it.
留在
原始詞典資料9 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。
remainnoun/ɹɪˈmeɪn/
- 1
That which is left; relic; remainder.
- 2
That which is left of a human being after the life is gone; relics; a dead body.
- 3
Posthumous works or productions, especially literary works.
- 4
obsoleteState of remaining; stay.
remainverb/ɹɪˈmeɪn/
- 1
To stay after others or other parts have been removed or otherwise disappeared.
- After three rounds of interviews, only 5 candidates remained.
- I like to make more than enough food if I have people round for dinner, so I can eat my way through what remains in the following days.
- 2
mathematicssciencesTo be left after a number or quantity has been subtracted or cut off; to be left as not included or comprised.
- If you divide 20 apples between three people, each gets six and two remain.
- 3
To continue unchanged in place, form, or condition, or undiminished in quantity; to abide; to stay; to endure; to last.
- Promise me you will always remain my good little girl.
- Remain a widow at thy father's house.
- 4
To await; to be left to.
- 5
To continue in a state of being.
- There was no food in the house, so I had to remain hungry.
- The light remained red for two full minutes.
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。