Artificial dentures must be kept clean to keep their beauty and to preserve the health of your mouth.

人工做的假牙必须保持清洁，以便它能看得好看，并且，保持你口腔健康。

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Artificial dentures must be kept clean to keep their beauty and to preserve the health of your mouth.

人工做的假牙必须保持清洁，以便它能看得好看，并且，保持你口腔健康。

youdao