scratch your head (over something)
成語所屬單字scratch
scratch your head (over something) — 慣用語
1. To think very hard about something that is difficult to understand or explain.
1.慣用語
釋義
百思不解
To think very hard about something that is difficult to understand or explain.
例句
Mia scratched her head over the confusing math problem.
Why did the computer crash? Brian scratched his head for hours.