Fredericq's sign
[医] 弗雷代里克氏征(肺结核患者牙龈上的红线)
🧩 词语组成解析
🗣️ 情景例句
When I think something is right, I will stick to that.
若我认为某件事是对的，我会坚持到底。
To solve the problem
解决问题
because this is easier to shape than other kinds.
因为燧石较之其他石头更容易成形。