VOA慢速英语:Facebook为大学生推出新服务

conversation – n. a talk between two or more people, usually an informal one

original – adj. existing since the beginning

concept – n. an idea or principle

app – n. a program for a smartphone or other device that performs a special function

profile – n. a short description about a person

content – n. the information presented in different forms or media or on the internet

chat – n. a talk with someone in an informal way

relevant – adj. related or useful to what is happening or being talked about