For example, if your dentist is not in English, they will talk to the patient does not understand at all. But if Thailand has good English, good location and create a lot of revenue.
If the dentist does not speak English. I will talk to the patient does not understand. But if Thailand speak English well, it will cause a good career and earn more.
As if the dentist to communicate in English. Is going to talk to the patient to understand. But if people in English communication, it will have the good occupation and income.