我倾向于认为停顿越长,陈述就越有力。
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
Sustainability is the future of quarrying, and we must act now.
语言不仅仅是一种工具;它是流离失所者的家园。
The light constantly changes, and that alters the atmosphere and beauty of things every minute.