3.A: How long has it hurt?
B: The pain started last night.
A: Well, let's have a look.
B: What are you going to have to do?
A: Your gums seem to be inflamed. You'll need treatment.

A: 疼了多久了？
B: 昨晚开始疼的。
A: 好，让我们来检查一下。
B: 你接下来要做什么？
A: 你的牙龈好像发炎了。你需要治疗。
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