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vi. 【生物学、医学】血清转化, 对疫苗产生抗体
🗣️ 情景例句
What do you do for a living?
你以什么为生？
The shortest answer is doing.
最简短的回答是做。
Let me have a look. Oh, here it is. But it's an old one. Where is my new one?
让我看看，在这里，这是那个旧的，我那件新的哪去了呢？