Clues
来自Big Physics
Safin（讨论 | 贡献）2022年4月28日 (四) 12:48的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=clues+etymology&newwindow=1&hl=en ref] late Middle English: variant of clew. The original…”的新页面）
late Middle English: variant of clew. The original sense was ‘a ball of thread’; hence one used to guide a person out of a labyrinth. clue (sense 1 of the noun) dates from the early 17th century.
