作为较大结构的不可拆卸部分建造的；嵌入式的。；成为某事物必不可少且永久的组成部分的；固有的。
作为较大结构的不可拆卸部分建造的；嵌入式的。
Constructed as a nondetachable part of a larger structure.
作为基本组成部分或特征存在的
existing as an essential constituent or characteristic
成为某事物必不可少且永久的组成部分的；固有的。
Being an essential and permanent part of something.
包含在内的通常需额外付费的功能。
Being an included feature that normally comes as an extra.
the Ptolemaic system with its built-in concept of periodicity
托勒密体系及其固有的周期性概念。
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