You can download its source code and build the application from scratch or, if available, pull an existing binary from your UNIX distribution's repository.

可以下载它的源代码并从头构建这个应用程序，也可以从您的UNIX发行版的存储库获得二进制代码(如果有的话)。

youdao

The cat will scratch you if you pull her tail.

如果你拉猫的尾巴，它就会抓你。

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Pull out the drifting string and check the gauge for scratch.

起出通井管柱，检查通井规擦痕。

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In the stagnant supermarket business where he spent much of his career, Donald, 50, built a reputation as someone who could both start a business from scratch and pull off a turnaround.

FORBES: Magazine Article