单词	cementum
释义	ce·men·tum (sĭ-mĕntəm) also ce·ment (-mĕnt) n. A bonelike substance covering the root of a tooth. [New Latin, from Latin caementum, rough stone; see CEMENT.]
随便看	Bazin bazooka B & B bb BB BB "B.B." BBA b-ball BBB BBC BBC English BB gun bbl. b-boy b-boying BBQ BBS BC bcc BCD BCE B cell BCG vaccine BChE

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