A one-server deployment is a single source of failure.

一个服务器部署是单一故障源。

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But there's another source of failure, one not so easily corrected.

CNN: Why inaugural speeches mostly fail

Their failure to mention the source of the suspect drawings was likewise pragmatic.

FORBES: Eric Hebborn Wants To Teach You How To Forge Art. Got A Pen? [Book Excerpt #2]

Another source of regret for Raymond Aubrac was his failure to persuade his parents to leave France for the safety of Switzerland even though he had secured false papers for them.

CNN: Nazi era French Resistance leader dies