“您先请。”——“别客气，伯德先生，您先请。”"After you." — "Not at all, Mr Bird, after you."“非常感谢！”——“别客气。”"Thank you very much." — "Don't mention it."“无论怎样，非常感谢。”——“别客气。”"Thanks very much anyhow."— 'It's a pleasure.'...
义齿各部位出现铸造缺陷机率:卡环小连接体处较高, 下颌高于上颌.The incidence of casting defect is higher in the clasp and minor connecter, mandibular than maxillary.它们被分成两个或三个明显的体部, 并连接体节的附肢.They have segmented with two or three distinct parts, and jo...