Unstained preparation
[医] 未染色标本
🧩 词语组成解析
a. 没有沾污的, 无污点的
🗣️ 情景例句
We're already scheduled elsewhere.
我们已经有其他安排了。
Touch pitch and you will be defiled.
近朱者赤，近墨者黑。
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。