One way to picture it: your hands are clean — the bad thing did not come from you. Someone points at you, but there is no mark on you.
Three branches
沒做壞事：責任不在你
最貼近核心的一族：談的是「這件事跟你無關」，差別只在你是被指控的人，還是被波及的人。
not guilty · adjective · B1
Not guilty of a crime, or of the wrong thing that someone has accused you of doing. Used about a person other people suspect, or about someone a court has to decide about.
無罪的；清白的
心裡乾淨：沒有壞念頭
核心的「沒沾到」從行為移到心裡：不是沒做這件事，而是做的時候沒有壞意思。
unintentional (remark/action) · adjective · B2
Said or done without meaning to hurt or upset anyone. Used about a remark, a question, a mistake, or an action that carried no bad intention, even when someone takes it badly.
無惡意的；不是故意的
還沒被世界弄髒
從「這一次沒沾到」推到「一直都還沒沾到」：乾淨變成一種長期狀態，也因此變成一種弱點。
naive, trusting · adjective · B2
Not knowing much about the bad or dishonest things that happen in the world, so that you trust people easily and can be tricked. Often used about someone young, and sometimes about a whole time in the past.
天真；不諳世事
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。
innocentlyadv/ˈɪnəsəntli/
In an innocent manner.
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。