| 释义 | pop-under noun[ C ]
 E-COMMERCE, MARKETINGukus
 an advertisement that is shown in a new window behind the window that you are looking at on a website:
 Pop-unders are considerably less intrusive than pop-ups.
 
 pop-underadjective[ before noun ]
 pop-under ads
 
 Compare
 pop-up
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