The crux of the matter is that no phone was defect-free.

问题的症结是，没有手机是无缺陷。

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In software development, good debugging tools help make applications more robust and defect-free.

在软件开发过程中，良好的调试工具有助于让应用程序更加健壮，没有缺陷。

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But for now we assume that Nokia have fixed the problem and new earpiece modules are defect-free.

但现在我们认为，诺基亚有固定的问题和新耳机模块无缺陷。

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Few plantations, however, can afford the sophisticated equipment needed to create defect-free supplies.

ECONOMIST: Espresso coffee

They give up, he says, and in the process form nearly defect-free structures that exhibit incredible bonds with the surface of the metal.

FORBES: Steely Dan

Because their dominant culture of 99% defect-free operational excellence squashes any attempts at innovation just like a Sumo wrestler sitting on a small gymnast.

FORBES: Creating An Innovation Culture: Accepting Failure is Necessary