It has an easy interface, and fits in a pocket: a self-containedprogram that does not need installation.
它有一个简单接口,适合在口袋里:一个自包含的程序,不需要安装。
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Worms: A self-replicating, self-containedprogram executes without user intervention. Worms create copies of themselves, and they don't require a host program to infect a system.