I beat on the top of it with my fists.

我用拳头捶打它的顶部。

youdao

When she had gone I began to walk up and down the room, clenching my fists. My aunt said.

她走后我开始在房间里徘徊，紧握双拳。

youdao

When she had gone I began to walk up and down the room, cleaning my fists. My aunt said.

她一走我就在房间里来回地踱着步子，双拳紧握。

youdao

Naturally, I confronted her about this unbelievable behavior and in return I received a barrage of fists to my face.

FORBES: Suzy Lee Weiss and the Age of Entitlement

Timid at first, easily swayed (quite literally) by the motorbikes whizzing two inches (five centimetres) past my pedals, I now happily join in the waving of fists at pedestrians or lorry drivers hogging MY bus and cycle lane.

BBC: Caroline Wyatt cycling through Paris

Two days before I was set to leave for Cairo, I switched on my computer and saw pictures of young men dancing atop the walls of the American embassy, shaking their fists and burning the American flag.

WSJ: Fearlessness and Loving in Cairo | Traveler's Tale