英语播客EnglishPod 618

Lesson Introduction¹
 
When there is an emergency, who are you going to call? No, not Ghostbusters, you have to call
911! In this great lesson, we will teach you in English, many different examples of why and when
you would call an emergency number. This lesson can save your life! Don't miss it! 
 

1 introduction   

n.(to)介绍；传入，引进；导言，导论，绪论

参考例句：

• The introduction tells you how to use the book.引言告诉你怎样使用这本书。
• A letter of introduction will ensure you an interview.凭一封介绍信准保会接待你。