How many people in order not to let others see the heart, pretend crazy, xi xi ha ha.

有多少人是为了不让别人看出心事，装出疯疯癫癫，嘻嘻哈哈。

youdao

Sugar wing is not for now, but my mother for the rice cakes, and glue the teeth, xi xi xi!

现在糖元宝是不供了，但我妈妈供上了年糕，也是粘牙齿的，嘻嘻嘻！

youdao

Suppose someone has been investing money for n years and xi is the return on the investment in a given year.

假设有人投资了n年,Xi是第i年的收益率

耶鲁公开课 - 金融市场课程节选

If you have a sample with n observations, it's the summation I = 1 to n of xi/n--that's the average.

如果你有n个观测值,对Xi从i=1到n求和再除以n

耶鲁公开课 - 金融市场课程节选

Tomato in Chinese is Xi Hong Shi, "Xi" means west, "Hong" means red and "Shi" sounds like city.

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