To scratch one's ears and rub one's cheeks; to be fidgety, flustered, or embarrassed due to a difficult situation or predicament, showing agitation or helplessness.
面对突如其来的问题，他急得挝耳挠腮，不知如何是好。
Faced with the sudden problem, he was so anxious that he scratched his ears and rubbed his cheeks, not knowing what to do.
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