《Operating System Concepts》学习第 61 天，p733-p734 总结，总计 2 页。

一、技术总结

1.distributed system

(1)定义

A collection of loosely coupled nodes interconnected by a communication network(一组通过通信网络相互连接的松散耦合节点)。

二、英语总结(生词：1)

1.relevant

(1)relevant: re-("again") + levare("to lift up, lighten")

adj. relevant literally means "to lift up again", over time, it evolve to mean "having significant bearing on the matter(有重大作用的)"

(2)示例

Distributed systems are more relevant than ever, and you have almost certainly used some sort of distributed service(《Operating System Concepts》第 733 页)。

关于英语的注解同步更新汇总到 https://github.com/codists/English-In-CS-Books 仓库。

三、其它

今天没有什么想说的。

四、参考资料

1. 编程

(1) Abraham Silberschatz，Peter Baer Galvin，Greg Gagne《Operating System Concepts》：https://book.douban.com/subject/30272539/

2. 英语

(1) Etymology Dictionary：https://www.etymonline.com

(2) Cambridge Dictionary：https://dictionary.cambridge.org

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