monopinch

例句：

1. 1. She held the pen carefully with one monopinch.
   她小心翼翼地用一根手指握着笔。
2. 2. The artist used a single monopinch to draw the picture.
   艺术家用一根手指画了这幅画。
3. 3.The scientist measured the length of the monopinch with a ruler.
   科学家用尺子测量了这根手指的长度。