2) If you want to become an actor, you really have to commit yourself to it Presentation: the presenting of something表现,描述 I was asked to give a short presentation on the aims of the plan 他们要求我就这计划的目的作一个简短的陈述。 Rate 1)the speed with which something happens or is done E 速率 He works at a very fast rate 他工作的速度非常快 2)the number of occasion within a certain period of time when something happens比率,率 There is a high accident rate in this factory 这个工厂的事故率很高。2) If you want to become an actor, you really have to commit yourself to it. Presentation: the presenting of something 表现，描述 I was asked to give a short presentation on the aims of the plan. 他们要求我就这计划的目的作一个简短的陈述。 Rate 1) the speed with which something happens or is done速度， 速率 He works at a very fast rate. 他工作的速度非常快。 2) the number of occasion within a certain period of time when something happens 比率，率 There is a high accident rate in this factory. 这个工厂的事故率很高