Subgradient
次梯度
🗣️ 情景例句
You're making the game harder.
你使游戏变难了。
No, thank you. But it was very kind of you to offer.
不用了，谢谢。承蒙您好意提出。
Please tell Mr Hu that I am working hard on my Chinese.
请告诉胡先生，说我正在努力学习汉语。