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periodontics n.〔pl.〕 〔動詞用單數〕牙周病學 (=period...

perionychium

Her teeth , as her thirties wore on , gave her trouble , and the orthodontics and periodontics specialists she regularly consulted had their offices in the nearby middle - sized city , in a tall building across from the one in which les worked as an investment counsellor 三十好幾之后,牙齒開始找她的麻煩;她經常去咨詢的正牙專家和牙周病專家的辦公室就處在附近的那座中型城市,他們辦公的那棟高樓正好座落在他擔任投資顧問上班的那幢大樓對面。