The TV cameras zoomed in on the winner's face.电视摄像机镜头向获胜者的脸部推进。

I zoomed in on her face to show her reaction.我把照相机镜头向她的脸部拉近，以便显示出她的反应。

We're trying to zoom in on the cause of these problems [=to see and understand the exact cause of these problems] before they get worse.我们努力深入了解这些问题的真正起因，以免情况恶化。