每次访问这个网站都会弹出一个烦人的广告窗口。

An annoying ___popup appears every time I visit this website.

市中心新开了一家只营业两周的快闪店。

There's a new ___popup store downtown that will only be open for two weeks.

我刚打开电脑，一个广告窗口就突然弹了出来。

An ad window ___popped up as soon as I turned on my computer.