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
Where do people hang out on the weekend?
大家周末都去哪儿玩？
Maybe mine is the bigger.
我的或许更大些。
A burst of activity associated with the laying of submarine cables soon confirmed the Challenger's observation that many parts of the ocean were two to three miles deep,
海洋中很多地方可深达两三英里，