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First, HIV cannot live outside the human body for more than a few minutes so the chances of somebody contracting AIDS from a needle sitting in a seat are slim to none.

第一，艾滋病毒在离开人体几分钟之后就无法存活，所以坐在座位上被针扎后感染艾滋病的机率几乎是零。

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Here's an example. Oftentimes, find is helpful for locating a needle in a haystack, such as locating all the USES of a particular system call in a large body of application code.

例如，用户经常使用find在大范围内寻找很小的东西，比如在大量应用程序代码中寻找使用某个系统调用的所有地方。

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"This needle is still sharp enough to penetrate through body tissue.

VOA: special.2010.02.10

Dr Martin Mueller, one of the researchers behind this work, says that the greater damage to the body caused by the tattoo needle may explain the better immune response.

BBC: More antibodies are created with the tattooing method

Soon after being diagnosed with diabetes in 1999, she was sticking a needle into her stomach three times daily to deliver the insulin that her body is unable to produce.

FORBES: Waiting to Inhale