Gingival sulci
[医] 龈沟
🧩 词语组成解析
a. 齿龈的\\n[医] 龈的
[医] 沟
🗣️ 情景例句
I can't figure out why she said so.
我不能理解她为什么这样说。
Things unreasonable are never durable.
不合理的事不会持久。
But wouldn't you like to spend an extra day or two here?
你们不愿意在北京多待一天吗？