gum line短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 医龈线 Lucky us, we have dental floss, which removes food particles in between teeth and at the gum line. 幸运的是，我们有牙线，它能去除齿缝间及牙龈上的食物残渣。 yeeyan Then my gums began to get attacked by the virus, my gum line receded, exposing previously covered areas of my teeth. 然后我的牙龈开始受到攻击的病毒，我的牙龈消退，揭露我的牙齿以前涉及的领域。 hiv-vct