《Programming Abstractions in C》学习第70天，p254-p257总结，总计4页。
一、技术总结
1.minimax strategy(极小化极大算法)
p255, This idea--finding the position that leaves your opponent with the worst possible best move--is called the minimax strategy because the goal is to find the move that minimizes your opponent's maximum opportunity。
二、英语总结
1.ambiguity是什么意思?
答：
(1)ambiguity < ambiguous。
(2)ambiguous: ambi-(about, around，与...有关的) + agere(drive, lead, act)。adj. having more than one possible meaning。
2.rationally是什么意思？
答：
(1)ration > rational > rationally。adv. in a way that is based on reason and clear thought, rather than emotions(理性地，合理地)。
(2)ration: *re-(to reckon, think)。c. the mental process of reasoning; fixed allowance of food(ratio)。
3.accommodate是什么意思？
答：ad-(to) + com-(intensive prefix，用于强调) + modus(*med, to appropriate)。vt. make fit for。p257, you must modify the approach used in the nim program to accomodate the following extensions。
三、其它
四、参考资料
1. 编程
(1)Eric S.Roberts，《Programming Abstractions in C》：https://book.douban.com/subject/2003414
2. 英语
(1)Etymology Dictionary：https://www.etymonline.com
(2) Cambridage Dictionary：https://dictionary.cambridge.org
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