puff up
phrasal verb with puff verb uk/pʌf/ us/pʌf/
（因感染或受伤）肿胀
If part of your body puffs up, it becomes bigger because it is infected or injured.
My leg puffed up all around the insect bite. 我腿上被昆虫叮咬的部位肿了起来。
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