Koch's tests
[医] 郭霍氏试验(检出血性素质)
🧩 词语组成解析
n. 测验（test的复数）
🗣️ 情景例句
What?
什么？
An old dog barks not in vain.
老犬不空吠。
Imagine their dismay when they found a beautifully-cooked wallet and notes turned to ash!
可以想像他们发现一只煮得很好看的钱包，钞票已化成灰时的沮丧心情。