Posner's tests
[医] 波斯讷氏试验(检尿白蛋白来源)
🧩 词语组成解析
n. 测验（test的复数）
🗣️ 情景例句
I could tell something was up by the look on their faces.
我一看他们的脸色就知道有事。
I can't say…
有口难言。
Where did you learn to speak English?
你从哪里学会说英语的呢？