一、邀请专家进行讲座 Introduction (介绍) Hello everyone, today I'd like to discuss an important top...
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一、邀请专家进行讲座 Introduction (介绍) Hello everyone, today I'd like to discuss an important top...
一、 你同事安排了一个会议,但是你已经安排了其他工作没办法参加他的会议。 Introduction (介绍) Hello everyone, thank you for jo...