我看到牙龈已经发红，发炎了。什么时候开始感到痛的？

I can see that the gum is red and inflamed. There's also some swelling. When did you begin to have pain?

youdao

我看到牙龈已经发红，发炎了。什么时候开始感到痛的？

I can see that the gum is red and inflamed. There's also some swelling. When did you begin to have pain?

youdao