pinch in / out
（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
to place usually the thumb and a finger of one hand on the screen of a device such as a mobile / cell phone or small computer and move them together or apart, to make the image or text on the screen appear smaller or larger
Pinch in on the home page.在主页上两指合拢将图文缩小。
