Wind the dangling floss around the middle finger of the other hand.

将悬挂着的牙线缠绕在另一只手的中指上。

youdao

You can also insert the finger that's between your middle finger and pinky.

你也可以用无名指献献身。

youdao

You can move side to side, back and forth, or in circles with your middle finger.

你可以两边着力，来来回回，或者用中指画圈。

youdao

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

Middle finger exactly and your thumb.

中指和姆指。

哈佛公开课 - 幸福课课程节选

So-- if you don't feel comfortable doing it, don't do it-- what I'd like to do now is as following: Take your thumb and your middle finger and create as much as possible a 90 degree angle.

感觉不舒服的，就不要做，希望按下面的指示做：,让你的姆指和中指,尽可能形成一个直角。

哈佛公开课 - 幸福课课程节选

On a recent February afternoon, horns honked and a middle finger flew as Cabral walked the traffic island.

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He underwent surgery last December to repair a ruptured ligament in the middle finger of his right hand.

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Argentina is, in effect, giving the rest of the world its middle finger.

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