Pollak's tests
[医] 波拉克氏试验(检尿中黑素)
🧩 词语组成解析
n. 测验（test的复数）
🗣️ 情景例句
He is new at the work to the work.
他没有做这项工作的经验。
Let's move on to what makes our product sell so well.
让我来说明是什么原因使我们的产品销售得那么好。
Who was first? Who was second? Who was third?
谁是第一？谁是第二？谁是第三？