Hyperparaboloids
超抛物体
🗣️ 情景例句
Not to worry.
别担心。
One thing, however, that we should not forget in doing business is to have a sense of appreciation.
可是有一件事我们做生意时不能忘，就是保持一份感恩的心情。
Fine, thank you. How are you?
我很好，谢谢，你好吗？