步骤名字要短，并且是排比结构的。
Use short names for steps and use parallel construction.
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例如，一个名字以X509_NAME开始的函数，通常会应用于一个X509_NAME结构。
For example a function whose name begins with X509_NAME will typically apply to an X509_NAME structure.
两个结构体中的匿名成员被认为有相同的名字。
Two anonymous fields are considered to have the same name.
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