食指

He pinched the leaf between his thumb and forefinger.

他将叶子捏在食之间。

Well, fingers crossed and hearts crescented that the Grim Reaper or Azrael do not read the Guardian.

好吧，食中交叉（译注：一种祈求好运手势），祈祷那个狰狞持镰收割者（译注：死神）或者死亡天使不要读到卫报吧。

Medical examination of the prostate, usually with his right index finger, put on rubber fingerstall, into the anus to check for palpation.

医生检查前列腺时，一般用右手食，戴上橡皮套，由肛门伸进去作触诊检查。

Lisa ran her forefinger along the seam of her duffel bag, its microfield sealing up behind as if she had touched it with a magic wand.

丽莎食在帆布包开口上缓缓划过。微场密封条仿佛在魔棒挥下随着手上下滑动。她费起了背包，嘴里轻轻哼了一声。