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
You'll feel better after a good night's sleep.
你好好睡上一觉就会好些。
In Arizona, the stars seem very bright.
在亚利桑那州，星星看起来格外明亮。
Do you live near the factory?
你住在工厂附近吗？