Visiting scholar(1996-1997), Rome University(Tor Vergata), Italy. Advanced visiting scholar(2002), Trento University, Italy.
意大利罗马第二大学访问学者（1996-1997）；
University of Trento, a young, medium sized institution in a human-scale city that offers an excellent quality of life.
特伦托大学，一个年轻的，中型人规模的城市生活提供了优质的机构。
University of Trento, a young, medium sized institution in a human-scale city that offers an excellent quality of life.
特伦托大学，一个年轻的，中型人规模的城市生活提供了优质的机构。
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