Branches make it easy to support different versions of a software package, regardless of whether those versions are permanent or were created for experimentation.
分支可以轻松支持不同版本的软件包，无论这些版本是永久的还是实验性的。
Support animal protection projects; do not abuse animals for experimentation.
支持保护动物的工作；不滥用动物做实验。
Support animal protection projects; do not abuse animals for experimentation.
支持保护动物的工作；不滥用动物做实验。
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