The palm-forward "V" sign, formed by raising and spreading the first two fingers, has three different meanings in American culture.

手势“V”掌心向外， 竖起食指和中指， 并向两边展开， 这样就构成了一个V 形手势。V形手势在美国文化中有三个不同的含义。

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The palm-forward " V" sign, formed by raising and spreading the first two fingers, has had three distinct connotations in American culture.

在美国文化中，把食指和中指伸开，手掌朝前形成的V型手势有三种截然不同的涵义。

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This is called a "right-handed" coordinate system because the thumb and first two fingers of your right hand can be used to represent the three directions.

这被称为“右手”坐标系统，因为你右手的大拇指、食指和中指可以被用来表示三个方向。

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Both parties have to register their fingerprints using a biometric scanner that's plugged into the washing machine, which will only work if it scans a different finger than the one used before (you could also trick the machine and use two of your own fingers when you first set things up, but you'd only be fooling yourself right?).

ENGADGET: Your Turn washing machine makes sure it's your turn

The story goes that English soldiers waved their fingers at French soldiers who had threatened to cut off captured archers' first two fingers to prevent them shooting arrows.

BBC: When did the middle finger become offensive?