Gingival sulci
[醫] 齦溝
?? 詞語組成解析
a. 齒齦的\\n[醫] 齦的
[醫] 溝
??? 情景例句
How come I wasn't told?
你怎么沒有聽說？
What does it matter?
有什么關系？
he has just bought a new house in the city,
他剛在城里買下一所新房子，