Gingival crevice
[医] 龈缝, 龈下隙
🧩 词语组成解析
a. 齿龈的\\n[医] 龈的
🗣️ 情景例句
A red sky at night indicates fine weather the following day.
晚上天边红预示着明早天气好。
It took him a long time to make up his mind.
下决心花了他很长时间。
She was a famous actress When I was still at school.
当我还是学生时，她就是个著名的演员了。