Graefe's sign
[医] 格雷费氏征(突眼性甲状腺肿时,上睑不能随眼球运动而下转)
🧩 词语组成解析
🗣️ 情景例句
It is already.
现在已经很兴奋了
We know not what is good until we have lost it.
有的时候不爱惜，失了以后空叹息。
Precautions of this sort are necessary, for it is impossible to foretell the exact nature of the difficulties which will confront the pot-holer.
作出这样的准备是必要的，因为无法预见到洞穴探险者究竟会遇到什么性质的困难。