她用手指划过竖琴的琴弦。

She swept her fingers over the strings of the harp.

竖琴一种有一个通常系有四十六根长短不一的琴弦的直立的开放三角架、弹奏时用手指拨动琴弦的乐器

An instrument consisting of an upright, open triangular frame with usually46 strings of graded lengths played by plucking with the fingers.