Serogenesis
血清生成
🗣️ 情景例句
Let's congratulate ourselves that this transaction has been made.
让我们祝贺这次交易圆满成功。
She wishes to hear from her friend.
她希望收到朋友的来信。
How did the bees know exactly in which diection to fly?
蜜蜂是怎样确切地知道朝哪个方向飞呢？