什么样的恋情让人难以忘怀？坐飞机的时候要注意的种种事项用中文该怎么表达？赶快来听听今天的课程吧！ In this lesson, a friend is sitting on an airplane reminiscing about an ex-girlfriend who was a flight attendant, and how they met. Episode link: https://www.chinesepod.com/4061