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我们听到的言语是我们听不到的言语的指示。它是一种必要的回避,一种暴力的、狡猾的、痛苦的或嘲笑的烟幕,使对方保持在它的位置上。
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
We're not in the junk business. We're not in the business of making a lot of products. We're in the business of making great products.