"scratch your head" in Chinese (Simplified)
挠头（因困惑）
Definition
在困惑、迷惑或试图解决难题时，字面上或比喻地用手挠头。
Usage Notes (Chinese (Simplified))
常用于比喻，表达困惑或疑虑。常见表达有“让人挠头”“大家都在挠头”，指心理状态多于实际动作。
Examples
He scratched his head while solving the math problem.
他在解数学题时**挠了挠头**。
She scratched her head because she didn’t understand the question.
她因为没听懂问题而**挠了挠头**。
The dog watched me and scratched its head.
狗看着我，**挠了挠头**。
That strange noise definitely made me scratch my head.
那个奇怪的声音真让我**挠头**。
The instructions were so confusing, everyone was scratching their heads.
说明太复杂了，大家都在**挠头**。
His answer left us all scratching our heads in confusion.
他的回答让我们全都**挠头**，一脸困惑。