Suddenly,he put his hand into the water and rubbed two of his fingers together, making a strange sound, exactly like the sound of a croaking frog.

VOA: special.2011.02.19

Now take these two fingers-- the middle finger and the thumb-- and as much as possible, from that 90 degree angle, create a circle.

再让这两个手指-,中指和姆指-,尽可能保持直角时围成一个圆圈。

哈佛公开课 - 幸福课课程节选

Reinhardt played guitar chords with just two or three fingers.

VOA: standard.2009.12.19