N-COUNT Your forefinger is the finger that is next to your thumb. 食指
He took the pen between his thumb and forefinger.
他用拇指和食指夹起笔。
Hold the floss tightly between your thumbs and forefingers, with about an inch (2.5 cm) of floss between them.
两只手的食指和大拇指分别捏紧牙线的一端， 中间留出一英寸长（2.5厘米） 。
The old man tapped the steering wheel once with his foreFingers.
那位老爷子用食指轻轻拍着方向盘。
Use the thumbs and forefingers to guide the floss between the teeth.
握紧牙线，用食指和拇指轻柔地在牙缝间操作牙线。
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