When this pin is not connected to anything.

当该引脚没有连接到任何东西。

youdao

GND: This pin is the combined control circuitry and power ground.

该引脚是综合控制电路和电源地。

youdao

Generally, this pin is grounded, but it can be tied to any voltage reference.

一般来说，这个引脚接地，但它可连接到任何电压参考。

youdao

Which is sort of a childhood nursery rhyme. And then they cut to this pig and a car with two pin wheels,

这是小时候的儿歌。然后镜头切换到猪和有风车的车，

广告泛滥 - SpeakingMax英语口语达人

This PIN-pad scheme is in some ways just a variation on fairly common ATM skimming hardware techniques, which attach to the machines and invisibly siphon off credit card data.

FORBES: Hancock Fabrics Hackers Switch Stores' PIN Pads

In fact, this pin is more like rolling a gutter ball, as it refers to a situation in which a stock closes at a strike price on expiration day.

FORBES: Pinning The $500 Tail On The Apple

Can I pin this on my board at pin spire .com?

FORBES: The "Parasite" Phenomenon - Radical Copycatting of Pinterest