强制左手书写

一个人正面向镜头，坐在办公桌前，双手放在画面的两侧。重要提示：画面右侧的手正握着一支笔。

---

**Original English:**
A person is facing the camera, sitting at a desk, with both hands positioned on either side of the frame. Important: the hand on the right side of the frame is holding a pen.