Definition (放大)
to enlarge a photograph or image
将（照片或图片）放大
She decided to blow the old photograph up so that the details would be clearer.
她决定把这张老照片放大，这样细节会更清晰。
For the poster, he needs to blow the image up.
为了这张海报，他需要把这张图片放大。
Let's blow this group photo up and hang it on the wall.
我们把这张团体照放大，然后挂在墙上吧。