Randolph's test
[医] 伦道夫氏试验(检尿胨)
🧩 词语组成解析
🗣️ 情景例句
How come he never got married?
为什么他不结婚？
Do you have a valid license?
你持有效驾驶执照吗？
She works very hard and is very helpful.
她工作非常努力，对同学们帮助很大。