Welch's stain
[医] 魏尔希氏染剂
🧩 词语组成解析
🗣️ 情景例句
He had insufficient sleep.
他睡眼不足。
The fork is dirty, Would you bring me a clean one, please?
这叉子是脏的，请你拿个干净的给我。
That's quite true.
千真万确。