Gingival trough
[医] 龈沟
🧩 词语组成解析
a. 齿龈的\\n[医] 龈的
trough
['trɔ:f]
n. 水槽，食槽;低谷期;[航]深海漕;[气]低气压槽;
🗣️ 情景例句
What are your terms?
你的条件是什么？
The fool doesn't suspect a thing.
傻人不疑心什么。
He married my aunt in 1971, so Clare would have been five years old.
他1968年与我伯母结婚，那么克莱尔应该已经5岁了。"