Definition
to expand or fill something with air, or cause it to enlarge in this manner
（使）變得更大或鼓起
To make the pillow comfortable, you need to puff it up.
為了讓枕頭舒適，你需要把它弄蓬鬆。
She used a hairdryer to puff up the down jacket, making it warmer.
她用吹風機把羽絨外套吹蓬，讓它更保暖。
This recipe requires you to puff up the dough while baking.
這個食譜要求你在烘烤時把麵團弄蓬鬆。