谢谢观看渴望梦想的光芒，不要轻易说失望Write in the end,send a sentence to you,eager to dream of light,dont easily say disappointed为方便回顾本课程内容，可在课件下载后进行查看，对疑问之处可随时提问Thank you for coming.For the convenience of reviewing the content of this course,you can view it after downloading the courseware.You can ask questions at any time
