Cellular cementum
[醫] 含細胞牙骨質
?? 詞語組成解析
n. 牙骨質, 水門汀
??? 情景例句
that I'd like your opinion about.
我需要你的意見。
A change of work is as good as a rest.
調換一下工作是很好的休息。
but unfortunately not all of us are born handymen.
但不幸的是，我們并非人人都是能工巧匠。