事实上，它通常是一个复数的形式，包括普通数字的实数部分和需要乘以负一的平方根的虚部。

In fact, it can generally be a complex number with both a "real" part that's an ordinary number and an "imaginary" part that's multiplied by the square root of one.

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世界卫生组织要求越南卫生部提供每个病例的数据以充实数目。

WHO has asked the Ministry of Health in Viet Nam to supplement the Numbers with data on individual cases.

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在第2部分，我将探讨专为操作浮点数(与抽象实数相反)而设计的函数。

In Part 2, I'll explore the functions more designed for operating on floating point Numbers as opposed to abstract real Numbers.

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