求翻译：(1) 对有关的民航法规、国家或行业标准、专业知识、工作程序和维修人为因素知识发生的修订或变化进行更新培训，并且至少每两年对所从事的工作内容进行再培训是什么意思？

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(1) * of the civil aviation rules and regulations, state or industry standards, expertise, and repair Human Factors knowledge of revisions or changes to update the training, and at least every two years, the contents of the work undertaken by the retraining

(1) The revision or the change which to the related commercial aviation laws and regulations, the country or the profession standard, the specialized knowledge, the working routine and the service human factor knowledge occur carries on renewal training, and at least every two years to the work cont

(1) for the civil aviation regulations, State or industry standards maintenance human factors knowledge, expertise, procedures and update training amendments or changes that have occurred, and at least once every two years to work and training content

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