类型包括简单类型和复杂类型。

A type can be simple or complex.

youdao

核心的设计原则包括简单性、可用性和可靠性。

Core design principles include simplicity, usability, and reliability.

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用例描述用例流程的细节信息，包括简单介绍，步骤，选择的流程。

Use case description Details of the use case flow, including brief description, steps, alternate flows.

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I think that book will give you all the basic principles you need in calculus of one variable, more variables, elementary complex numbers, maybe solving some problems with vectors and so on, which you're going to get into.

我想那本书会给你所需的所有基本知识,包括一元和多元微积分,简单的复数运算,可以解决一些与矢量有关的问题,而这正是你们将要学的

耶鲁公开课 - 基础物理课程节选