One way to hold it: two people carrying the same load together — labour shared, with the work pointing at one goal. The picture says nothing about whether that goal is good.
From the word’s history
From Late Latin collaborare, from com- 'together' + laborare 'to work' (from labor 'labour'); English borrowed it in the 19th century, partly as a back-formation from collaborator.
來自晚期拉丁文 collabōrāre，拆開就是 com-（一起）+ labōrāre（勞動、工作，來自 labor）。所以這個字字面上就是「一起做工」，英語在十九世紀才借進來，一部分是從 collaborator 反推出來的。字根裡只有「一起出力」，沒有任何褒貶——這正好解釋了為什麼同一個字既可以是研究室裡的合作，也可以是戰時的通敵。
Wiktionary (collaborate; Late Latin collabōrāre, com- + labōrāre)
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原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
collaborateverb/kəˈlæb.ə.ɹeɪt/
- 1
To work together with others to achieve a common goal.
- Let's collaborate on this project, and get it finished faster.
- Wikipedia is a website where anyone can collaborate.
- 2
To voluntarily cooperate treasonably, as with an enemy occupation force in one's country.
- If you collaborate with the occupying forces, you will be shot.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。