English主要词典
pop-up
Universal Words
adjective [onlybeforenoun]
1 (of a book, etc.) containing a picture that stands up when the pages are opened:
a pop-up birthday card
2 (of an electric toaster) that pushes the bread quickly upwards when it is ready
3 (of a computer MENU, etc.) that can be brought to the screen quickly while you are working on another document:
a pop-up menu / window
