Gingival retractor
[医] 龈压缩器, 龈牵开器
🏥 医学释义
牙龈牵开器
🧩 词语组成解析
a. 齿龈的\\n[医] 龈的
n. 食言的人, 牵拉肌, 牵开器\\n[医] 牵开器, 缩肌
🗣️ 情景例句
I can act on it.
我就可以处理。
We need them urgently.
我们急需这些资料。
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。