选手们因违规而两次被警告。
一些立法者主张对那些因严重罪行而两次服刑后又被判第三次严重罪行的人判处终身监禁。
Some legislators advocate mandating a sentence of life in prison for anyone who, having twice served sentences for serious crimes, is subsequently convicted of a third serious crime.
这个通过和几百万人交谈开发的机器人始于1997年,并因最近似人类而两次获得勒伯纳(Leobner)奖。
This has been developed through conversations with millions of people since 1997 and has twice won the Loebner prize for the most human-like chatbot.
From 1983 to the present as you just said, the economy has a long period of smooth, robust expansion interrupted by two very mild recessions.
第二时期是从1983年至今,正如你所说,经济长时间处于,平稳强健的发展状态,而只出现了两次轻度衰退。
That means, when I take two derivatives, I want to get a, then you should know enough calculus to know it has to be something like at^, and half comes from taking two derivatives.
也就是说,当我想求二阶导时,得到了a,你应该有足够的微积分知识,才能知道必须有类似at^的项,而这个1/2则是因为求了两次导数
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