case by case?回复：请国家对公派短期出国访问学者进行严格考核

Because sub-leasing, I had chances to meet closely with two this kinds of people. both at early 40s, professors, with mid to high level positions in their institutes. Both are exactly the same, work extremely hard, live very cheaply, at a age really want to learn. I really respect them, and learned a lot form them.