pinch in
phrasal verbpinch in/out
to place the thumb and a finger of one hand on the screen of a device such as a mobile phone or small computer and move them together or apart, to make the image or text on the screen appear smaller or larger （在手机等电子装置的屏幕上）两指合拢以缩小图文，两指张开以放大图文 Pinch in on the home page. 在主页上两指合拢将图文缩小。 You can pinch out to zoom in on the map. 你可以两指外滑放大地图。