次波：哈哈！你明白了吧？我是老师！

Zip: Haha! You see? I am the teacher!

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“一周送三次花，体贴又有风度。”波琳娜的母亲说。

"Three bouquets in one week. It's a very refined and thoughtful gesture," Polina's mother said.

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在罗马尼亚体操事业青黄不接的时候，卡特琳娜 波诺尔在一次全国比赛中脱颖而出，入选国家队。

During a period when Romanian gymnastics needed new talent, Catalina Ponor was spotted during a nationwide talent search and chosen to train with the national team.

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So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

And the thing I wanted point out is, we've got this global variable number of calls. Which is there not because Fibonacci needs it but just for pedagogical reasons, so that we can keep track of how much work this thing is doing.

要指出的是我们已经,调用了几次这个全局变量,这不是因为斐波那契数列,需要调用它而只是,因为教学上的需要，以便我们可以知道,这个函数做了多少事情。

麻省理工公开课 - 计算机科学及编程导论课程节选