To put on airs; to be pretentious; to act important; to strike a pose and feign importance.
他明明是刚来的新人，却总是捉班做势，摆出一副经验丰富的样子。
He is clearly a newcomer, yet he always puts on airs, pretending to be very experienced.
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To put on airs; to be pretentious; to act important; to strike a pose and feign importance.