2. Are there many differences?

1. A lot of people can't tell the difference between...

25. keep in mind 记在心上

　　 ☆交际用语☆

24. in case of 以防……

23. in honor of 纪念……，庆祝……

22. die of 死于

21. roll over 翻转

20. first of all 首先

19. first aid 急救

18. live life to the fullest 生活得充实