fist-pumping
noun/ˈfɪst pʌmpɪŋ/
/ˈfɪst pʌmpɪŋ/
[uncountable] (especially North American English) (informal)- the action of moving your arm and hand in a fist pump in order to celebrate success or victory, or to show support
拳头抽气：为了庆祝成功或胜利或表示支持而动臂动手的动作