Pollak's test
[医] 波拉克氏试验(检尿中黑素)
🧩 词语组成解析
🗣️ 情景例句
There is still a week to go before the vacation begins.
现在距离假期还有一星期。
What will the weather be like tomorrow?
天气将象明天一样吗？
No, they aren't.
不，不是。