| 单词 | 去牙斑 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔dental hygiene〕The practice of keeping the mouth, teeth, and gums clean and healthy to prevent disease, as by regular brushing and flossing and visits to a dentist.口腔卫生：通过经常刷牙、去牙斑、看病等措施保持口腔、牙齿和齿龈的清洁和健康，以防止疾病的行为美国传统〔gum〕The toothbrush gently removes plaque without damaging the gums.牙刷轻轻地刷去牙斑, 丝毫没有伤到牙龈。外研社新世纪 |
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