郑长征 Chang-Zheng Zheng
郑征
Zheng Zheng
以上为机器翻译结果，长、整句建议使用 人工翻译 。
郑征于己于1997年晋升为教授。
Zhengzheng was promoted to professor in 1997 .
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Zhengzheng was promoted to professor in 1997.
郑征于己于1997年晋升为年龄大的老师。
Zhengzheng were promoted to professor in 1997.
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