The artist asked her to pose by the window where the light was best.

pose 是动词，意思是"摆姿势"，通常指为了拍照、绘画等目的而保持某种姿势。这个词来自法语，原意是"放置、摆放"。在艺术创作中，pose 特指模特为艺术家保持特定的姿势。