be under somebody's thumbOBEYto be so strongly influenced by someone that they control you completely 完全在某人的控制之下；在某人的巨大影响下 He was still under his father’s thumb. 他仍受制于他的父亲。
be under somebody’s thumb• Meg's really got Darren under her thumb.• He was showing her that she was under his thumb.• Judges are under the thumb of the bureaucracy.
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