Ninhydrin tests
[医] 茚三酮试验(检蛋白质及氨基酸)
🧩 词语组成解析
n. [化](水合)茚三酮
n. 测验（test的复数）
🗣️ 情景例句
What's it for?
是做什么用的？
An ox is taken by the horns,and the man by the tongue.
牛因角被执，人因舌陷身。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。