他沮丧地用拳头猛捶桌子。
He slammed his ___fist on the desk in frustration.
她在会议中沮丧地握紧了拳头。
She clenched her ___fist in frustration during the meeting.
他用拳头击打墙壁，在石膏上留下了一个凹痕。
He struck the wall with his ___fist, leaving a dent in the plaster.
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