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Open the section "Definition and Classification of Gems" under the section "Overview of Gem Processing and Materials", Only in the video, associate professor Liao wangchun of the jewelry department of Jinling institute of science and technology explained: there are 45 varieties of natural gemstones, 32 varieties of natural jade, 9 kinds of available and national standard named organic gemstones, and the most important types of artificial gemstones are synthetic gemstones, artificial gemstones, pieced gemstones and recycled gemstones...迪士尼公主为你开启一段梦幻之旅，引领你走进童话的世界。在这里只要你怀揣梦想，就可能发现奇迹！Add a fine oneLet's take it apart. No.1 is the filter tip, No.2 PLA has shown signs of melting from this perspective, and No.3 hollow filter cotton also has traces of black edges. The last part of the smoke bomb was already quite dark.说话的是陈平，他来的晚一些，发现事情不妙，立即出言帮范增解围。三弟啊，齐国事情怎么样了？终于说到的正题，这是兄弟两人彼此都很关心的是事情，也是今日的主题。Of all American journalists, I think the most outstanding one is Haret Aban of the New York Times. Due to Aban's years of experience in China, his rather sophisticated treatment of people and his reputation as a Times, he has made quite a wide range of friends. He and Chiang Kai-shek's wife Song Meiling are also very close friends. He doesn't have to be like me. As a reporter of the Japanese News Agency, he has to be busy with the morning and evening reports every day. He just needs to pick up some important information and transmit it. So he is in an extremely advantageous position. Although I am in Shanghai, I have always been concerned about the U.S. Policy towards Japan and developments towards China, so I often exchange views and intelligence with Aban.