Erichsen's sign
[医] 埃里克森氏征(检骶骼疾患)
🧩 词语组成解析
🗣️ 情景例句
What subject did you major in university?
你在大学主修的科目是什么？
Lock the stable door before the steed is stolen.
马未偷走前，厩门先锁上。
The temperature drops to -- 30 o and very few people attempt to cross the Pass.
气温下降到零下30度，试图跨越山口的人寥寥无几。