Porter's tests
[医] 波特尔氏试验(检尿蓝母,过量尿酸)
🧩 词语组成解析
n. 测验（test的复数）
🗣️ 情景例句
Good evening, how may I help you sir?
晚上好，你需要帮助吗？
I don't think you'll have any difficulty in pushing sales.
我认为你推销时不会有任何困难。
What's going on?
发生什么事了？