They have committed a grave fault?

他们犯了很大的错吗？

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XML happily permits a number of errors that, although not sufficiently grave to cause a software fault, nevertheless impede smooth reading.

XML允许许多问题存在，这些问题尽管不足以导致软件故障，但会影响流畅的阅读。

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Therefore, developing new style and high performance fault recording and analysis device has grave real and economic purpose.

因此，研制开发一种新型的高性能故障录波器具有重大的现实和经济意义。

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Go into Grove Street Cemetery some go visit his grave and say, "It's not your fault Eli."

走进韦街公墓,会有人到他的坟前悼念,说,"这不是你的错,伊莱"

耶鲁公开课 - 美国内战与重建课程节选