1.Well, Sadie says she sometimes acts as a " periodontist." What, you ask, is a " periodontist" (periodontist)?

好吧，Sadie说她有时会充当“周病医”。 你问，什么是“周病医” （periodontist）？机翻

2.In that case, since I live in a small town, I do basic dental work, but also act as a periodontist, oral surgeon, and orthodontist when the need arises.

Sadie：种情况下， 因为我住一个小镇，我做基本的工作， 但需要时也会担任周病医、口医和齿矫正医。机翻

3.Because Sadie lives in a small town, not only does she sometimes do work related to the work of a periodontist and an oral surgeon, but she also acts as an " orthodontist."

因为Sadie住一个小镇上，她不仅有时会做一些与周病医和口医相关的工作， 她还充当着“齿矫正医” 的角色。机翻

4.A periodontist would be a dentist who is very knowledgeable and specializes in taking care of the place where the teeth go into your mouth – your " gums" (gums) – and other parts of the structure of the jaw.

周病医是一位知识渊博的医，专门负责照顾齿进入口的地方——你的“龈”（龈）——以及下颌结构的其他部分。机翻