@abstractmethod
蓋茨還表示他在2014年之前仍與愛潑斯坦有會面，且曾在國外與他一起活動，但他強調自己未曾造訪愛潑斯坦的私人島嶼，也「從未在那裡過夜」。
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第二章 仲裁机构、仲裁员和仲裁协会
这也就不难理解，为什么 OpenAI CEO Sam Altman 会在纽约的一场午餐会上，抛开 Google，直言不讳地警告：
The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”