Phenomenon koch's
[医] 郭霍氏现象(结核菌素再感染剧烈反应)
🧩 词语组成解析
🗣️ 情景例句
I can't make sense of it.
这个我弄不明白。
Have you taken a train?
你坐过火车吗？
Actually, it is more than we need.
事实上，已超出我们所需要的。