我要花一点时间感谢今天的主讲人，哈特先生和格雷女士。
I want to take a minute to thank the keynote speakers, Mr. Hart and Mrs. Grey.
我很荣幸地介绍今晚的主讲人，刘易斯教授。
It's my great pleasure to introduce tonight's speaker, Professor Lewis.
您可以在您的同龄人作为主讲人的事件。
You can get in front of your peers as a speaker at an event.
我的天啊你真的要我当主讲人吗？
很高兴介绍今天的主讲人，哈特博士。
It is pleasure to introduce the keynote speaker for tonight, Dr. Hart.
我很荣幸地介绍今晚的主讲人，路易斯教授。
It's my great pleasure to introduce tonight's speaker, Professor Lewis.
很荣幸向各位介绍今天的主讲人李教授。
It is my honor to introduce (to you) today 's keynote speaker, prof. Lee.
提供所有主讲人清楚的指标及适当的背景资料。
Give clear guidelines and appropriate background materials to all speakers.
Weinman主讲。不受欢迎的电子邮件已越来越普遍和复杂。
Weinman Unwanted email has grown increasingly common and sophisticated.
Weinman主讲。不受欢迎的电子邮件已越来越普遍和复杂。
Weinman Unwanted email has grown increasingly common and sophisticated.
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