Examples

他的左手上有三个箕斗，拇指、中指、食指上各有一个。

He has got three spiral loops on his left hand, which are on his thumb, forefinger and middle finger.

这孩子的拇指是簸箕(状如簸箕的指纹)，食指都是斗

to cross one's fingers

食指与中指交叉重叠

Melanie noticed the woman's index finger was stiffly grained with chalk dust.

梅兰妮注意到那个妇女的食指满是粉笔灰。

The thumb is opposable to the forefinger.

拇指在食指的对面。

He crooked his index finger.

他弯曲了他的食指。