他紧握拳头,咬紧牙关,准备迎接挑战。

He clenches his fists and grits his teeth, ready for the challenge.

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He clenches his fists and grits his teeth, ready for the challenge.

clenches 是动词 clench 的第三人称单数形式,clench 的意思是"紧握、咬紧",通常用来描述用力握紧拳头或咬紧牙关的动作。

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