這個拼法底下其實是2個不同的字，意思沒有關係， 只是長得一樣。下面分開列出來。跳到 fall in (roof collapses) · fall in (soldiers: get in line)
1
fall in
A second word, same spelling
2
fall in
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。
fall inverb
- 1
To collapse inwards.
- The heavy rain caused the roof to fall in.
- 2
governmentmilitarypoliticsOf a soldier, to get into position in a rank.
- His men resumed their muskets and fell in.
- 3
governmentmilitarypoliticsOf a soldier, to get into position in a rank.
- At that point, the Subaru fell in behind the Toyota.
- 4
To come to an end; to terminate; to lapse.
- On the death of Mr. B., the annuity, which he had so long received, fell in.
- 5
To become operative.
- The reversion, to which he had been nominated twenty years before, fell in.
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。