赵勇(华西都市报)：我国电子商务已建立了好多年，但是作为一个整体，网上贸易的队伍仍不够强大。

Zhao Yong (Western China Metropolis Daily) : It has been several years since the inception of e-commerce in China, but the online market is not strong as a whole.

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赵勇博士的报告题目涉及牙种植骨重建和骨组织工程，题目是：丝素蛋白仿生构建三维支架的初步研究。

Dr Zhao also gave the oral presentation for his recently research in silk fibroin, The title is The Initial Study on 3D Porous Silk Fibroin Scaffold: Preparation and Morphology.

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于是乎，五月十七日台长换人，就被描述成台长赵化勇的正常退休。

So the announcement on May 17th of the replacement of the broadcaster’s director, Zhao Huayong, described it as a “normal retirement”.

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