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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
Well, thanks.
好的， 谢谢你。
You are bigger than I am.
你比我大
I like television very much.How much does it cost?
我非常喜欢这台电视机。请问它多少钱？