Buchner's tneory
[医] 布赫内氏学说(免疫学说)
🗣️ 情景例句
What do you do for a living?
你是做什么的？
No practice, no gain in one's wit.
吃一堑，长一智。
Of course, Father Christmas isn't real.
当然，圣诞老人并不是真的。