puff up your chest 挺起胸膛
puff up with pride 得意洋洋
puff up with air 使充气
1. The bird puffed up its feathers to stay warm.
那只鸟把羽毛撑起来以保持温暖.
2. He was puffed up with pride after the promotion.
升职后，他感到非常得意。
3. Her face puffed up due to the allergic reaction.
因为过敏反应，她的脸肿了起来。
A: Why is your brother looking so proud of himself?
A：为什么你哥哥看起来那么自鸣得意？
B: He just won the first prize in the competition, and it has really puffed him up.
B：他刚得了比赛的第一名，这让他非常得意。
1) 使膨胀、肿胀
2) 使骄傲、自大
3) 鼓起
1. 使膨胀，使肿胀
e.g. The swelling caused his face to puff up.
肿胀使他的脸肿了起来。
2. 使得意，使自大
e.g. He is all puffed up with his new title.
他因为有了新头衔而非常自大。
phrasal verb
1. to swell or become larger by filling with air or liquid
2. to become conceited or proud
Synonym: swell, inflate, aggrandize