Subgradient
次梯度
🗣️ 情景例句
Have you made the reservations for...
你为。。。订了座吗？
Ask no questions and you will be told no lies.
如果你少问，谎言就难进。
It also provides--and some student sociologist might care to base his thesis upon the phenomenon--an escape of another kind.
学社会学的大学生来露营是另一种形式的摆脱现实，他们的目的很可能是根据观察到的露营现象去写论文。