1、Lecture 这个词的意思是讲座，上课，这里我们来举例说明一下； Lecture refer to some short of things that has to do with speech that involves a lot of knowledge given by the teacher usually。讲座通常是教师用最减淡的语言教授大量的知识。
2、Briefing这个词的意思是简报这里我们来举例说明一下；Ladies and gentlemen I feel Like to have the opportunity to brief you on our factory。女士们、先生们，我借此机会向你们减淡介绍一下我们工厂。
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