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
I reminded him to work hand.
我提醒他要用功。
Do you have an extension?
你有分机吗？
The best time to come to China is in spring or autumn.
到中国来，最好的时间是在春天或者秋天。