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 sign up (join a class or service) · sign up (get someone to join)
1
sign up
A second word, same spelling
2
sign up
原始詞典資料4 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。
sign upverb
- 1
To add a name to the list of people who are participating in something.
- We signed Bob up for kitchen cleanup duty.
- 2
To add one's own name to the list of people who are participating in something (including amateur, but not professional, teams).
- Coordinate term: sign in
- Terry signed up for the soccer team.
- 3
To agree to purchase some good or service.
- After much deliberation we decided to sign up for satellite TV.
- 4
governmentmilitarypoliticsTo enlist in the armed forces.
- Didn't you hear? He's just signed up!
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。