pop-up

名词 pop-up:

1. a book (usually for children) that contains one or more pages such that a three-dimensional structure rises up when a page is opened
   同义词：pop-up book
2. a short high fly ball
   同义词：pop fly, pop-fly

动词 pop-up:

1. appear suddenly or unexpectedly
   同义词：crop up, pop up, pop

pop-up

adj.（形容词）
Emerging quickly from a recessed or concealed position when activated:
有自动跳起装置的：当给予动力时能迅速从隐蔽的地方升起的：
例句：
pop-up gun emplacements.
自动弹起式炮台

Rising to form a three-dimensional structure when a page is opened:
有跳起立体图片的：当一页纸一打开时能从中跳起的三维立体的部分：
例句：
pop-up illustrations in a children`s book.
一儿童读物中跳起的立体图片

n.（名词）
A device or an illustration that pops up.
自动跳起式装置或立体图片
Baseball See pop fly
【棒球】 参见 pop fly