Consider a system that reads and processes a number of input files sent from an external source.
请考虑一个读取并处理发送自某个外部源的很多输入文件的系统。
One of the hardest things to do is to differentiate between untrusted input from an external source — such as a user, another Web site, or some other resource — and data that is validated already.
最棘手的一件事情是如何从外部源(如某个用户、别的Web站点或某些其他资源)和已经验证的数据中区分出不受信任的输入。
An external clock is a common solution but it requires a digital source equipped with clock input, it exists but it is rare and specific.
(增加)外部的时钟是通常的解决方案，但这要求数字源设备具有时钟输入接口。
An external clock is a common solution but it requires a digital source equipped with clock input, it exists but it is rare and specific.
(增加)外部的时钟是通常的解决方案，但这要求数字源设备具有时钟输入接口。
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