Use a pin to hold together the 2 papers.

用大头针把两篇文件订起来。

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If it won't break, you can use a pin to prick it.

如果它不会破，你可以用针刺一下。

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To use the service you'll need a PIN number.

使用该服务需要一个密码。

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If you haven't done it already, when you e-file this year, get a PIN for filings or use your adjusted gross income from 2011 as a PIN.

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It is always a good idea to have a backup card available, or use a chip and PIN prepaid card.

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It means that I can use my PayPal account and at the checkout counter, I just use my cellphone number and a pin.

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