second-level certificate for national computer
...四级证书Fourth-level Certificate for National Computer 全国计算机二级证书Second-level Certificate for National Computer 全国计算机一级证书First-level Certificate for National Computer ..
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second-level certificate for national computer
国家计算机二级证书
以上为机器翻译结果，长、整句建议使用 人工翻译 。