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
and we'd cook the hot dogs.
然后烤热狗。
I'd be glad to help.
我乐意帮忙。
She didn't visit her step-mother much, though I believe that they used to speak on the phone from time to time.
她不常看望她的继母，虽然，我相信她们过去时不进在电话里聊一聊。