他攥起了拳头。用英语怎么说？

他攥起了拳头。

His hands balled into fists...

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

hands

n. 手( hand的名词复数 )，人手，（工具等的）把，帮助；

例句
He lifted his hands above his head...
他将双手举过头顶。

balled

再包土的；

例句
He picked up the sheets of paper, and balled them tightly in his fists...
他抓起那几张纸，在手里紧紧攥成团。

into

prep. （表示方向）进入…中，（表示所属）输入，（表示状态）进入…状态，（表示时间）持续到；

例句
By 1838, the abolitionists had shamed parliament into ending slavery in British colonies...
到1838年，废奴主义者迫使议会出于道德压力而废除了英国殖民地的奴隶制。

fists

n. 拳，拳头( fist的名词复数 )；

例句
Alex clenched her fists and gritted her teeth...
亚历克丝攥紧拳头，牙咬得咯咯响。