self-contained engine drive 单独发动机传动
First, it's much easier for an application such as a search engine crawler to understand the relative importance of content, and second, a section is self-contained.
首先，应用程序(如搜索引擎crawler)能够更容易地了解内容的相对重要性，其次，节是自包含的。
SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.
SQLite是一个实现了自包含、可嵌入、零配置的SQL数据库引擎的小规模C代码库。
An engine that obtains the oxygen needed from the atmosphere, used especially to propel aircraft and distinguished from rocket engines having self-contained fuel-oxidizer systems.
无内含供氧系统的发动机：一种从空气中获得所需氧气的发动机，尤用于推进飞机飞行，并以拥有自带燃料氧化系统区别于火箭发动机。
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