研究计划的目的是在于说服别人你有一个有意义有价值的研究项目，并且你有充分的能力和全面的计划来完成它 Develop an outline. This could vary considerably depending on how long you desire your commentary being. At its briefest, say to get a bulleted or solitary-paragraph commentary, make note of vital details to incorporate. ▌给你的观众充分的时间来理解这些图表，稍作停顿，然后再解释为什么这些... http://manueluiufq.blogsidea.com/15167787/英文演讲稿-an-overview