我对他的功绩评价不高。
这可不是小功绩，南加里佛尼亚大学洛杉矶分校的纳米技术学家周崇武给予评价。
That's no small feat, says nanotechnologist Chongwu Zhou of the University of Southern California in Los Angeles.
葛洪自觉整理保存汉代逸史的学术功绩，应该得到客观公允的评价。
Gehong, s academic contribution for compiling and preserving documents of Han dynasty should be appraised objectively and fairly.
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