求翻译：兹证明张三是新疆和田洛浦县教育局干部，此人对工作认真，一丝不苟，能认真完成领导交办的各项工作任务，政治立场坚定，在大是大非面前始终保持清醒的头脑，坚决反对民族分裂，加强民族团结，乐于助人，坚决拥护共和党的领导是什么意思？

To certify that John is Lop County Education Bureau cadre in hotan, Xinjiang, who works hard, meticulous, and earnestly fulfill all tasks assigned by the leadership, political position firmly, in the cardinal always keep a clear head, resolutely oppose ethnic separatism, strengthen national unity, helpfulness, resolutely support the leadership of the Communist Party