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详细占有资料对于研究世界林业十分重要。因为:1.研究者难以亲自到各国去实地考察;2.由于长期封闭,研究者对国外情况所知不多。作者列举了由于资料不足所造成的误解和困难,并提出了关于如何占有资料的建议。
Detailed possession of information for the study of the world’s forestry is very important. Because: 1. Researcher is difficult to visit the countries in person; 2. Due to the long-term closure, the researchers do not know much about the foreign situation. The author cites the misunderstandings and difficulties caused by the lack of information and proposed recommendations on how to take possession of the information.