B: You look not very good. what's wrong with you?
A: i'm having a bad cold.
B: oh i'm really sorry. but you should go to the doctor and have an injection. and then you will be much better soon.
A: no, i don't want to go to the doctor, i'm afraid of injection.
B: but if you don't have an injection, your cold will be worse. so i will go to the doctor with you. don't be afraid.
A: thank you ,i will go with you.
Individual rational to both sides get less than may get, this is the dilemma
你要英语的还是汉语的在翻译