那个坏脾气的老板威胁要痛打迟到的员工。
The bad-tempered boss threatened to ___thrash the late employee.
那只受伤的鸟在笼子里疯狂扑腾。
The injured bird ___thrashed wildly in the cage.
孩子在床上剧烈翻滚，把被子都踢开了。
The child ___thrashes violently in bed, kicking off the blankets.
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